Semiparametric Inference With Correlated Recurrence Time Data Statist

Questions: Part I Research Paper Annotated Bibliography This piece of the task will comprise of an explained writing survey. Sources ought to incorporate distributed exact examination identifying with the subject (e.g., peer checked on scholarly articles), exchange diary articles, industry reports, government reports, and additionally outsider data sources (e.g., Hoovers on the web). In the event that sources with realized predisposition are utilized (e.g., organization sites), the inclination must noted and the source be appropriately balanced different points of view giving an option view.Format/OutlineI. Presentation: A clarification of the choice to be made (or issue illuminated or issue tended to). A depiction of the proposed results of the process.II. Source List: A depiction of the wellsprings of data that will be used in arriving at the choice. (See below)III. Decision: An outline that integrates the wellsprings of data to show an exhaustive covering of the significant data. As a major aspect of the decision, a progressively formalized and explicit issue articulation will be created, alongside a testable hypothesis.Content/Detail:A least of eight sources will be explored and portrayed. (Note: while the utilization of public statements and news media outlines is allowed, they won't check toward the required sources.)For each source, you should show the pertinence of the material to the choice to be made. That is, you should decide how tenable consider pyramid proof the source is as it identifies with the issue. On the off chance that the source gives an account of essential exploration (e.g., an exact examination), at that point you should portray/sum up that examination and give an appraisal of its outcomes including an assessment of the ends. For every single optional source, you ought to distinguish any wellsprings of predisposition and report on how the inclination may influence the ends. I will assess each source (and your depiction of it) independently with r espect to its importance to the choice to be settled on (and your definition of the choice to be made). That is, it will be assessed with respect to what data it gives that will empower an educated choice to be made. I will assess the aggregate assemblage of sources to the degree that they, as a gathering, are probably going to give the important data to settle on an educated choice. Part II Research DesignThis some portion of the task will comprise of a depiction of essential, applied/exact, research (for example client or potential client studies) to address the particular data necessities of the circumstance. This is a depiction of applied exploration to be led to give information that will aid the dynamic for your appointed problem.You will portray: 1) the particular data to be gathered (i.e., the variable(s) to be estimated), 2) the significance of the data to the choice procedure, and 3) the system by which the data will be gathered (the examination plan). The approach is the place the scientist distinguishes the particular advances that will be taken to gather the data expected to respond to the examination questions. The plan of a fair examination philosophy is the focal point of the second piece of this course. It is basic that you comprehend, and can control, the possible wellsprings of inclination in a study.Format:I. IntroductionAn clarification of the choice to be made (or issue understood or issue tended to). A clarification with respect to what data will be created and how that data would be utilized to aid the choice procedure for the issue relegated. This area ought to give an away from of the ideas to be contemplated and the factors that will be measured.II. Examination PlanA depiction of the procedure/research plan.III. ConclusionA outline that integrates the wellsprings of data (From both Part I and Part II of this term task) to exhibit a thorough covering of the pertinent data. Note: the finish of the paper can't, for evident reasons, pres ent the consequences of your proposed research. In any case, it should introduce a rundown of how the data to be picked up will illuminate the choice to be made. Answers: Part I: Research paper Annotated Bibliography Presentation This segment of the investigation underscored on evaluation on past exploration business related to music beat and its effect on clients food utilization. While there were a few examinations have been performed by research researchers, every one of the investigation has certain restrictions. Simultaneously, thinking about the particular case situation, it is additionally important to looked into past attempts to make any suggestion. Along these lines, this investigation was performed. Here, eight researcher articles have been considered and shown the importance of the material to the choice to be made. At the end of the day, it very well may be said that this examination has demonstrated a pathway through which further investigation can be executed with uncommon reference to given case situation. Source List As referenced over, this segment of the investigation has examined a rundown of past works identified with the examination territory to help the analyst in settling on an educated choice. With the assistance of this appraisal of past works, the specialist attempted to recognized the current holes so the ebb and flow examination can exhibit the procedure that café networks can embrace identified with utilization of music. Source 1: Stroebele, N., de Castro, J. M. (2006). Tuning in to music while eating is identified with increments in individuals' food admission and dinner length. Hunger, 47(3), 285-289. While considering the examination executed by Stroebele and Castro (2006), it very well may be said that they have executed this investigation to comprehend in the case of listening music while eating will build the food utilization just as length of the supper. As per this examination discovering, it has become evident that the music accessibility will altogether impact the food utilization just as food consumption. Be that as it may, the rhythm of the music didn't affect that much. Once more, the investigation technique has uncovered that they have considered undergrad as the example of this examination. Thus, starting here of view, it very well may be contended that the examination was closed dependent on a particular objective gathering of individuals. Since, the café clients not limited in understudies, regardless of whether the discoveries will stay same for all gathering of clients, can't be said. Thus, further examination is required thinking about bigger example with all ga therings of individuals. Source 2: Harrington, R.J., Ottenbacher, M.C., Staggs, A. also, Powell, F.A., 2012. Age Y Consumers Key Restaurant Attributes Affecting Positive and Negative Experiences. Diary of Hospitality Tourism Research, 36(4), pp.431-449. Once more, the examination executed by Harrington (2012) whenever considered, at that point additionally it tends to be noticed that the investigation predominantly attempted to epitomize whether music in eateries changed visitor conduct as far as food utilization or not. This investigation additionally underscored explicit beat of the music. In any case, dissimilar to the previously mentioned investigation, this examination considered two diverse sub contemplates. The first has been directed in an easygoing eatery in Germany, while the subsequent one acted in a reenacted café setting incorporated with neighborliness educational program in the USA. This examination has uncovered that there were two distinct outcomes during lunch and dinning period. Given that the menu stays same; such distinction has been called attention to. While the music stays consistent, the food spending during supper was emphatically impacted by the age. Be that as it may, during noon there was no such impact . In contrast to the above examination, however this specific investigation has considered diverse age gathering of individuals, the examination didn't accentuate on quality recognition, fulfillment, even utilization design. In this way, further investigation may put light on such zones. Source 3: Jacob, C., Guguen, N., Boulbry, G. (2010). Impacts of melodies with prosocial verses on tipping conduct in an eatery. Global Journal of Hospitality Management, 29(4), 761-763. While considering the investigation executed by Jacob, Gueguen and Boulbry (2010), it tends to be said that the examination was performed to test the impact of melodies with prosocial verses on tipping conduct of the clients. For this reason an example of 786 clients was viewed as less than 3 conditions. The analysis was led for about a month and a half two times every day, 3 sort of ambient sounds (prosocial verses, nonpartisan verses and standard conditions) were played. As per the investigation discoveries, it very well may be contended that playing tunes with prosocial verses caused more prominent helping conduct of clients. Simultaneously, the investigation likewise uncovered that the normal pace of clients tipping the servers is more when melodies with prosocial verses are played contrasted with when tunes with impartial verses are played. This test was led under characteristic setting where clients were presented to numerous different occasions. Later examinations have discove red that tuning in to melodies with prosicial verses increment helping propensity of clients as well as brings forth a prosocial feeling in them. In any case, these examinations were performed under research facility conditions where clients were exclusively affected by the melodies not under some other occasions not at all like this investigation. Along these lines, starting here of view, it has become certain that further investigation should be directed with considering the nature setting. Source 4: Demoulin, N. T. (2011). Music congruency in an assistance setting: The interceding job of passionate and subjective reactions. Diary of Retailing and Consumer Services, 18(1), 10-18. While considering the exploration done by Demoulin (2011), it very well may be clarified that the point of this investigation was to comprehend the music congruency in a help setting. As indicated by the discoveries made by the creator, the shopping conduct is influenced by store air. So as to play out this investigation, the creator has incorporated a model, which expected that clients feelings impact their shopping conduct. As per their Stimulus-Organism-Response (SOR) Model, t

Informative Essay Sample on Reliable Nutritional Information How to Evaluate Sources

Useful Essay Sample on Reliable Nutritional Information How to Evaluate Sources Nobody would contend that wellbeing is a key segment of joy, which has extraordinary effect on every other circle of life. Considering that a correct eating regimen is a significant factor that impacts wellbeing, clearly many individuals look for approaches to improve it. Therefore, a lot of items is proposed and it is basic to be all around educated about products’ properties and conceivable effect on living being to settle on a correct choice. The inquiry is how to discover data one can depend on? Clearly, one can discover dietary data in different sources, for example, books, articles, Web destinations. In any case, it is significant that you discover objective, solid and state-of-the-art data. In this way, when you read a book or an article, set aside some effort to gaze upward author’s life story, name of the distributing house or magazine, references to different works. Obviously, notable magazines are bound to be trusted, yet none-the-less it is fundamental that the creator has a clinical foundation and supports his/her proposition with realities and exceptional looks into. These days, numerous individuals scan Internet assets for required data. National Center for Complementary and Alternative Medicine records 10 inquiries individuals need to reply to assess clinical assets on the Web. These inquiries are the accompanying: Who runs the site? Who pays for the site? What is the motivation behind the site? Where does the data originate from? What is the premise of the data? How is the data chosen? How current is the data? How does the site pick connects to different destinations? What data about you does the sit gather and why? How does the site oversee connections with guests? Answers to these inquiries will assist you with revealing objectives that site is meant to achieve, which thusly gives you important bits of knowledge on unwavering quality of data. For instance, if Web website is supported by a medication organization, you could expect that articles on the webpage will keep an eye on unequivocal data that favor certain companys items. In some cases you may choose to get some item that you have found in business, yet make sure to request that the firm validate the cases made for the item. You ought to likewise know that occasionally firms may give undocumented reports from fulfilled shoppers, or interior diagrams and graphs as a proof of their cases that regularly could be confused with proof based research. To get pertinent data ask whether the organization directed tests on the security or adequacy of the fixings in the item, regardless of whether it has quality control framework and whether unfavorable reports from its customers were gotten. On TV, radio, in papers and magazines you discover a ton of data as to improving your wellbeing quite a bit of which is upheld by ongoing investigations. In any case, you ought to be basic as to such news for it is notable that exploration aftereffects of different researchers may repudiate one another. In this way, it is significant that you break down whether given data depends on one investigation or on the whole assortment of proof on a subject, you ought to likewise consider whether the examination was huge and done in people, regardless of whether it concentrated genuine infection endpoints or just markers of these illnesses. The entirety of the above is basic for it sets ground for an advocated choice as to dependability of gave data. At present, the significant inquiry isn't the place to discover required data yet how to assess its dependability. At the point when you look for healthful data recollect that each asset has its objective to achieve that impacts its substance. Consequently, be basic and use assets that are keen on giving unprejudiced, target information like those upheld by government offices, notable research places and instructive establishments.

Can robots help businesses appear more human

Can robots help businesses appear more human Make Money Online Queries? Struggling To Get Traffic To Your Blog? Sign Up On (HBB) Forum Now!Can robots help businesses appear more human?Updated On 14/06/2017Author : Pradeep KumarTopic : BusinessShort URL : https://hbb.me/2szF6y3 CONNECT WITH HBB ON SOCIAL MEDIA Follow @HellBoundBlogWe have all seen the movies with the common trope of robots taking over human jobs and wreaking havoc on the lives of humans. It is a popular argument and even a widely held fear. In reality, robotic process automation helps to execute various tasks, offering the opportunity for businesses to automate a wide variety of time-consuming processes. The draw for businesses is an obvious one, but can it indeed help individual employees as well? Some are saying that it does, and RPA can even help businesses to look more human. This article will provide the argument that robots have the ability to make businesses look more human.One of the main reasons that businesses are drawn to robotic process automation is that it helps to inspire their employees. Hear me out- the idea of a robot creatively inspiring anyone seems counterintuitive. However, the fact that robots take the manual labor out of working helps actual humans to be more creatively active in the work place. We will always need humans, but with robotic process automation, we allow humans to be what they are, human. Humans are not built for sitting on an assembly line doing the same thing over and over. The automation of this work allows for more innovation, and in the end, more human work to be done.With most people in this era not fully enjoying their job, the turnover rate is pretty high. This is especially true with jobs that are monotonous and do not take special skills and training to do. The cyclical resign-and-hire mode isn’t usually great for businesses that need specialized help. This is where the reliable robot comes in. With the advent of RPA, humans aren’t just pushed aside to let robots take care of business. Instead, they are promoted to interactive thinker and are trained to do jobs that only humans can do (which is usually judgment based). People are set to be more satisfied with their jobs, and more interested in general to make a career out of thinking.READWhy Your Business Needs Wi-Fi to SucceedWith the loss of one job to RPA, comes the advent of another. Of course, robots do not just come from nowhere and do need someone to have specialized knowledge of them for them to be run efficiently. This requires people to be trained in this field, enabling new jobs and new, higher level jobs. The idea of humans running the robots is proof that RPA has the capability of being a human job, making companies look more human and relatable to the general public.With anything, we must proceed with caution. Robotic process automation is a much-needed reformative process that will help to weed out monotonous manual labor in the long run. However, for it to be the most helpful to humans, we must sen sitively employ it, and make sure that humans are benefitting the most from the introduction of robotic process automation widely in the work force. We could be on our way to more creativity and innovation in business.

Wireless Network Security Abstract - 1520 Words

Wireless Network Security Abstract This is the study over the wireless network security. As the wireless communication has the different way of physical transport compared to wire environment of communication thus we have to use different measure to secure a network in wireless environment. Wireless networking has more security threats and vulnerabilities and we must have an effective management of it compare with wired technology which is more a management issue. Wireless networking has very important features as it offer firm and user’s flexibility, and portability with in the budget. It allow the users to get access to the network without the physical wired tied between them. It uses high frequency radio waves to communicate between devices. Introduction Wireless network has extended their user satisfaction capabilities as it is developing rapidly. It is open within the transmission range. To become the user choice of communication the wireless technology is successful because of its flexibility and easy to excess at any time anywhere by using their hand device. In wireless network it is difficult to limit the range of the radio transmission. Wireless network is unknown about the connected network the user can only view of the network from associated Access point. As there is moreShow MoreRelatedAnnotated Bibliography: Internal Control for Information Security1614 Words   |  7 PagesInternal Control for Information Security: Annotated Bibliography Making the case for Network Security. (2012, Apr 19). Retrieved from Wikibon Blog: http://wikibon.org/blog/making-the-case-for-network-security/ This author addresses the central concerns regarding information security in the modern business world using broad strokes to make the importance of network security as a key business operation readily apparent to the reader. As the article is addressed primarily on business managers andRead MoreWireless Mess And Ad Hoc Network Study And Challenges1690 Words   |  7 Pages WIRELESS MESS AD HOC NETWORK STUDY AND CHALLENGES ANKUSH SHARMA (Lecturer in Computer Application Department) (Aryabhatta International College of Technical Education, Ajmer) Email- Abstract: In the recent time, there will be an increasing need to provide application platforms such as internet deployment for areas without infrastructure, wireless video streaming between moving objects, data exchange between office equipment etc. These applications can be solved with the help of wireless ad hocRead MoreWireless Security And Vulnerability In The Wireless Network1190 Words   |  5 Pages Vulnerability in the Wireless Network Rafael Reccy Seminole State College Abstract Wi-Fi can be found anywhere in this day in age, you can walk into almost any establishment and you’ll be sure to find their Wi-Fi, accessible from anywhere within their spaces. Each data packet being transmitted through the air, whether containing private, sensitive or insensitive information, is available for an attacker to capture. To fight against this, there have been some standards that have come out throughRead MoreUsing 802.11 Wireless Local Area Network1024 Words   |  5 PagesCOMPUTER NETWORKS RESEARCH PAPER PHASE-1 By, Venkata Kannepalli- 2628541 Durga Chetan Kumar- 2627862 Susheel Sarab-2660333 ABSTRACT 802.11 wireless Local Area Network (WLAN) becomes most important these days. Whether it would be simple range extender for a home wired Ethernet interface, or as a wireless interface, WLAN provides mobility, ease of access and affordable. Most of the 802.11 wireless network uses the frequency of 2.4GHz, which leads the network to be unsafe and more vulnerable thanRead More4g Wireless Mobile Communication Networks1582 Words   |  7 PagesABSTRACT 4G wireless mobile communication networks are been specified to support display, battery and computational power etc. 4G wireless mobile communication networks should not focus on air interface and data rate, but instead cover advance wireless mobile communication networks and high speed wireless access system into different platforms. The era of new wireless communication is evolving and it will soon penetrate into daily life and change the way we live. The key concept is integratingRead MoreSecure Data Aggregation Of Wireless Sensor Networks868 Words   |  4 Pagesdata aggregation in wireless sensor networks: A comprehensive overview â€Æ' Abstract: Wireless sensor networks frequently consists of a huge number of less expensive radar networks that rigorously partial detecting,computation and communique abilities.due to source regulated radar nodules,this one is essential to diminish the extent of data broadcast so that the normal radar life span and the global bandwidth operation exist upgraded.data transmission in the network.As wireless sensor systems are frequentlyRead MoreChallenges Faced By Computer Network Security1501 Words   |  7 PagesAbstract- The rapid development in computer network technology leads to the security challenges faced by it at every step of its growth. Three main threats facing computer network security include: hackers, computer virus and denial of service attack. Safety factors of the network are mainly: resources sharing, data communication, computer virus and TCP/IP protocol security flaws. A safety network system should include at least three kinds of measures: legal measures, technical measures and reviewRead MoreEssay On 3G Security1429 Words   |  6 PagesWireless Networks: 3G Security Threats and Possible Solutions Md. Mahim Bin Firoj ID: 102-19-1239 Department of ETE E-mail: mahim_1239@diu.edu.bd ABSTRACT Cellular communication has become an important factor in our daily life. It could be targeted by any hacker to steal the important information with destructive purpose. Therefore, we need to provide strong security for users so that hackers failed to achieve their purpose. In this article it has been discussed limitations of 3G cellular networksRead MoreWireless Sensor Networks ( Wsn ) Is A Key Innovation For The Wireless Network Technology1483 Words   |  6 PagesAbstract—Wireless sensor networks (WSN) is a key innovation for the wireless network technology. It generally has a large number of sensor nodes with a power unit, a sensing unit, a processing unit, a storage unit, and a wireless transmitter receiver. They are more vulnerable to attack then wired ones due to its nature and resources limitations. So as to overcome this security problems we can different types of Key Distribution and Hierarchical WSN. This paper gives more solutions to all problemsRead MoreImportanc e Of Secure Information Transmission In Mobile Adhoc Network852 Words   |  4 PagesTransmission in Mobile Adhoc Network Harsha Jain Pranita Jain Department of Computer Science Engineering Department of Computer Science Engineering SATI College SATI College Civil Lines, Vidisha, M.P., India Civil Lines, Vidisha, M.P., India harshajain98@gmail.com pranita.jain@gmail.com Abstract— An Ad-hoc mobile network is an assembly of wireless transportable nodes devotedly creating a short-lived network lacking the use of any core-existing centralized administration or network infrastructure. MANET

Use of Symbolism in The Lottery by Shirley Jackson

Symbolism means like any place, person or thing that is something but can be interpreted in a different way. The Lottery by Shirley Jackson is a short story that shows symbolism, to give hints about the story in all the characters and objects in the story. This Short story takes place in the summer where a small town has a lottery every year round. The person that wins the lottery has a huge impact on the town and the crops that grow in it. Old man Warner is the oldest in the town and has been in more than seventy lotteries he likes to go by tradition and doesn’t like to change it up. Mrs. Hutchinson on the other hand doesn’t want to go by the tradition and thinks that the lottery is a huge mistake for the town. At the†¦show more content†¦The objects of â€Å" The Lottery â€Å" by Shirley Jackson also have symbolic references to the story each main object that has an impact in the story has a meaning of behind them. The Black Box the stoning the paper with the black dot all represent something in the story. The Black Box represents death. â€Å" Old box represents the tradition of the lottery itself. â€Å" The Black Box â€Å" is shown as death the color of death is black as well is the box. When the person takes out the card with a black dot in the middle of it they will be stoned to death! The box also know for evil â€Å" The new ( original ) box may had made the tradition more powerful , because you can’t question a tradition once it has moved beyond reason to simply the way things are done. â€Å" Hutchinson pulled the card from the black box and know she would have to be stoned to death. The black box is symbolizing death , sacrificing and evil. Stones â€Å" Symbolizes death but also the villagers unanimous support of the lottery tradition. â€Å" Mrs. Hutchinson will be stoned to DEATH by huge and â€Å" smooth stones. â€Å" The towns people try to get the smooth rocks so that way they kill the person that gets the paper with the black dot slowly and painfully , because if they would get big and pointy rocks the person would die faster. They want the person to have a slow sacrificing death , the towns people believe if theyShow MoreRelatedUse of Symbolism in The Lottery by Shirley Jackson1146 Words   |  5 Pageswhat is known as Symbolism. Symbolism is the use of object, name, or person to represent an idea. If a name is being use, a name such as autumn can represent the adulthood of a human. Creatures such as an Eagle, represents ‘Freedom’ and ‘America’. Even inanimate objects can represent ideas; the light bulb represents ideas that just sparked into a character’s head. In the short story, â€Å"The Lottery† by Shirley Jackson, a village has just entered the month of June, meaning that the lottery is to begin.Read More The Use of Symbolism in The Lottery by Shirley Jackson Essay938 Words   |  4 PagesThe Use of Symbolism in The Lottery by Shirley Jackson Within the first few lines of Shirley Jacksons The Lottery we are faced with such adjectives as clear, sunny, fresh and warmth. She goes on to paint a picture of small children just out of school for the summer, as the townspeople gather for the annual Lottery. This leads us to believe that the rest of the story is as cheery as the summer day initially described. We as the readers are virtually unaware of the horrible senseless eventsRead MoreEssay on The Use of Symbolism in The Lottery by Shirley Jackson1192 Words   |  5 PagesThe Use of Symbolism in The Lottery by Shirley Jackson In The Lottery, Shirley Jackson uses symbolism to make us aware of the pointless nature of humanity regarding tradition and violence. The story starts off on a beautiful summer day in a small town. The author describes the day as very euphoric but strikes a contrast between the atmosphere of the town and the atmosphere of the people gathered in the square. The atmosphere is subdued, where the children are gathered aroundRead MoreLiterary Analysis Of The Lottery By Shirley Jackson910 Words   |  4 PagesLiterary Analysis of the Short Story â€Å"The Lottery† by Shirley Jackson Shirley Jackson explores the subject of tradition in her short story â€Å"The Lottery†. A short story is normally evaluated based on its ability to provide a satisfying and complete presentation of its characters and themes. Shirley describes a small village that engages in an annual tradition known as â€Å"the lottery†. Narrating the story from a third person point of view, Shirley uses symbolism, foreshadowing and suspense to illustrateRead MoreAnalysis Of The Book The Lottery 916 Words   |  4 Pages The Foreshadowing in â€Å"The Lottery† On a warm day in late June, villagers gather in the square to participate in a lottery run by Mr. Summers. The children arrive first and begin collecting stones until their parents call them to order. Mr. Summers calls each head of the household forward to a black wooden box, where each selects a slip of paper. Once the men have chosen, Mr. Summers allows everyone to open the paper and see who wins. Bill Hutchinson wins and his wife immediately starts protestingRead MoreThe Lottery By Shirley Jackson972 Words   |  4 Pagesâ€Å"The Lottery† by Shirley Jackson, is a short story about an annual lottery draw in a small New England town. The town’s people have performed the lottery for more than seventy years. Shirley Jackson gives â€Å"The Lottery† a whole different meaning . The lottery is used for a public stoning, opposing to the very first thing that approaches to a reader s mind when they think of the lottery; a big amount of money . The reader sees both l iteral and metaphorical meaning of the Shirley Jackson’s short storyRead MoreHuman Corruption Of Human Nature1140 Words   |  5 PagesHuman Corruption in â€Å"The Lottery† â€Å"The Lottery† by Shirley Jackson is a classic short story in U.S literature. Written in 1948, the short story has been published in multiple languages around the world. It is still a required reading in U.S today. The story was later adapted into both a TV short and a play (â€Å"Shirley Jackson’s Bio†). Jackson uses irony and symbolism in â€Å"The Lottery† to show the corruption of human nature. The story opens up on a clear June day. It continues to describe an ominousRead MoreThe Lottery, By Shirley Jackson And A Rose For Emily By William Faulkner960 Words   |  4 PagesThe Use of Symbolism in â€Å"The Lottery† by Shirley Jackson and â€Å"A Rose for Emily† by William Faulkner The use of symbolism is used in literature to enhance writing and add meaning to a story, this is evident in the two short stories â€Å"The Lottery† written by Shirley Jackson and â€Å"A Rose for Emily† written by William Faulkner. With the authors use of symbolism Jackson and Faulkner are able to add depth to their writing in a way that connects with the readers. By adding symbolism to the short storiesRead MoreUse of Symbols in The Lottery by Shirley Jackson981 Words   |  4 PagesMany great authors use symbolism numerous of time in their stories. A symbol is a noun or word that represents a different idea. An author displays the symbols as a hit rather than blurting it out. Symbols are not only used in novels or poems, they are also used in everyday use. For an example, the American flag has fifty stars on it which each star represents a state. On the other hand, the thirteen stripes plays the part of our thirteen colonies; the beginning of our country. Even w ith our highRead MoreAnalysis of The Lottery by Shirley Jackson993 Words   |  4 Pagesgrow. Shirley Jackson was born in 1919 in San Francisco, California to Leslie and Geraldine Jackson. She is most well known for her short story titled â€Å"The Lottery† which was first published in The New Yorker to overwhelming and mixed reviews. The lottery, as portrayed in the short story, is a religious, annual ceremony in the afternoon of June 27. This event is said to be older than Old Man Warner and has lost most of its meaning. Every year, a â€Å"lucky† winner is blindly chosen with the use of a magical Use of Symbolism in The Lottery by Shirley Jackson In stories there will be objects that will constantly be mentioned within the story. This is what is known as Symbolism. Symbolism is the use of object, name, or person to represent an idea. If a name is being use, a name such as autumn can represent the adulthood of a human. Creatures such as an Eagle, represents ‘Freedom’ and ‘America’. Even inanimate objects can represent ideas; the light bulb represents ideas that just sparked into a character’s head. In the short story, â€Å"The Lottery† by Shirley Jackson, a village has just entered the month of June, meaning that the lottery is to begin. When everyone was present, the heads of the households’ names were called one by one to pick up a slip of paper. It was then discovered that the†¦show more content†¦The black box is not only Alliteration, but it is also a symbol in â€Å"The Lottery†. Martine Ma declares, â€Å"The black box holds the key between life or death for every single one of the townspeople†. Inside the black box is a â€Å"slip of paper† (Jackson1870) with â€Å"a black spot† (Jackson1870) that would declare the death of a villager and the sacrifice for the harvest. The black box also represents ‘evil’ in â€Å"The Lottery†. Seth Cassel stated, â€Å"The villagers have become entranced in the gruesome tradition of stoning people.† Proving that the black box has manipulated the townspeople into killing their fellow villagers because of the lottery the black box Ruiz6 brings. The slips of paper also represent something in â€Å"The Lottery†. â€Å"The pieces of paper represent the fragility and feebleness of life,† implies Lucas Sheelat. Paper is proven to be fragile; easy to rip even. Just like the lives in the village their lives hang in the balance of a single slip of paper that can easily tear their very life away. The three-legged stool that carried the black box up is also a symbol in the story. The article â€Å"Symbolism, Imagery, and Allegory: The Black Box and The Three Legged Stool† declares â€Å"The three legs of the stool are like the three aspects of the Christian Trinity.† The Holy Trinity in Christianity is known as the holder of life and all things good. To the villagers, the stool holding up the black box isShow MoreRelatedUse of Symbolism in The Lottery by Shirley Jackson954 Words   |  4 PagesSymbolism means like any place, person or thing that is something but can be interpreted in a different way. The Lottery by Shirley Jackson is a short story that shows symbolism, to give hints about the story in all the characters and objects in the story. This Short story takes place in the summer where a small town has a lottery every year round. The person that wins the lottery has a huge impact on the town and the crops that grow in it. Old man Warner is the oldest in the town andRead More The Use of Symbolism in The Lottery by Shirley Jackson Essay938 Words   |  4 PagesThe Use of Symbolism in The Lottery by Shirley Jackson Within the first few lines of Shirley Jacksons The Lottery we are faced with such adjectives as clear, sunny, fresh and warmth. She goes on to paint a picture of small children just out of school for the summer, as the townspeople gather for the annual Lottery. This leads us to believe that the rest of the story is as cheery as the summer day initially described. We as the readers are virtually unaware of the horrible senseless eventsRead MoreEssay on The Use of Symbolism in The Lottery by Shirley Jackson1192 Words   |  5 PagesThe Use of Symbolism in The Lottery by Shirley Jackson In The Lottery, Shirley Jackson uses symbolism to make us aware of the pointless nature of humanity regarding tradition and violence. The story starts off on a beautiful summer day in a small town. The author describes the day as very euphoric but strikes a contrast between the atmosphere of the town and the atmosphere of the people gathered in the square. The atmosphere is subdued, where the children are gathered aroundRead MoreLiterary Analysis Of The Lottery By Shirley Jackson910 Words   |  4 PagesLiterary Analysis of the Short Story â€Å"The Lottery† by Shirley Jackson Shirley Jackson explores the subject of tradition in her short story â€Å"The Lottery†. A short story is normally evaluated based on its ability to provide a satisfying and complete presentation of its characters and themes. Shirley describes a small village that engages in an annual tradition known as â€Å"the lottery†. Narrating the story from a third person point of view, Shirley uses symbolism, foreshadowing and suspense to illustrateRead MoreAnalysis Of The Book The Lottery 916 Words   |  4 Pages The Foreshadowing in â€Å"The Lottery† On a warm day in late June, villagers gather in the square to participate in a lottery run by Mr. Summers. The children arrive first and begin collecting stones until their parents call them to order. Mr. Summers calls each head of the household forward to a black wooden box, where each selects a slip of paper. Once the men have chosen, Mr. Summers allows everyone to open the paper and see who wins. Bill Hutchinson wins and his wife immediately starts protestingRead MoreThe Lottery By Shirley Jackson972 Words   |  4 Pagesâ€Å"The Lottery† by Shirley Jackson, is a short story about an annual lottery draw in a small New England town. The town’s people have performed the lottery for more than seventy years. Shirley Jackson gives â€Å"The Lottery† a whole different meaning . The lottery is used for a public stoning, opposing to the very first thing that approaches to a reader s mind when they think of the lottery; a big amount of money . The reader sees both l iteral and metaphorical meaning of the Shirley Jackson’s short storyRead MoreHuman Corruption Of Human Nature1140 Words   |  5 PagesHuman Corruption in â€Å"The Lottery† â€Å"The Lottery† by Shirley Jackson is a classic short story in U.S literature. Written in 1948, the short story has been published in multiple languages around the world. It is still a required reading in U.S today. The story was later adapted into both a TV short and a play (â€Å"Shirley Jackson’s Bio†). Jackson uses irony and symbolism in â€Å"The Lottery† to show the corruption of human nature. The story opens up on a clear June day. It continues to describe an ominousRead MoreThe Lottery, By Shirley Jackson And A Rose For Emily By William Faulkner960 Words   |  4 PagesThe Use of Symbolism in â€Å"The Lottery† by Shirley Jackson and â€Å"A Rose for Emily† by William Faulkner The use of symbolism is used in literature to enhance writing and add meaning to a story, this is evident in the two short stories â€Å"The Lottery† written by Shirley Jackson and â€Å"A Rose for Emily† written by William Faulkner. With the authors use of symbolism Jackson and Faulkner are able to add depth to their writing in a way that connects with the readers. By adding symbolism to the short storiesRead MoreUse of Symbols in The Lottery by Shirley Jackson981 Words   |  4 PagesMany great authors use symbolism numerous of time in their stories. A symbol is a noun or word that represents a different idea. An author displays the symbols as a hit rather than blurting it out. Symbols are not only used in novels or poems, they are also used in everyday use. For an example, the American flag has fifty stars on it which each star represents a state. On the other hand, the thirteen stripes plays the part of our thirteen colonies; the beginning of our country. Even w ith our highRead MoreAnalysis of The Lottery by Shirley Jackson993 Words   |  4 Pagesgrow. Shirley Jackson was born in 1919 in San Francisco, California to Leslie and Geraldine Jackson. She is most well known for her short story titled â€Å"The Lottery† which was first published in The New Yorker to overwhelming and mixed reviews. The lottery, as portrayed in the short story, is a religious, annual ceremony in the afternoon of June 27. This event is said to be older than Old Man Warner and has lost most of its meaning. Every year, a â€Å"lucky† winner is blindly chosen with the use of a magical

Causes of Climate Change. Is It Nature of Negligence

BRETT LUCAS TRINITY COLLEGE L6 SCIENCE GEOGRAPHY CLIMATE CHANGE: NATURE OR NEGLIGENCE The climate of our world is changing, but why? There is a great debate going on in the scientific community on whether our current climate change crisis is a natural occurrence over millions of years – as what has happened on the planet of Mars – or this natural process is being accelerated by man’s negligence. But first we must establish what is climate change? Climate Change is a long-term shift in the statistics of weather (taken from weather.gov October 2007 article on Climate Change). Throughout our planets long history our climate has changed between hot and cold in each time period from the Precambrian period to today. The Earth’s climate†¦show more content†¦Winds push horizontally against the sea surface and drive ocean current patterns. Ocean currents influence certain parts of the world more than others. For example the Humboldt Current that flows along the coastline of Peru directly affects the coast off of Peru and other adjoining re gions. The El Nià ±o in the Pacific Ocean affects the climatic conditions all over the world due to the ocean currents. Ocean currents can affect places that share the same latitude in Europe and North America. Any of these phenomena can have an impact on the climate, as is believed to have happened at the end of the last Ice – Age, about 14000 years ago. Human Causes Use of Oil, Coal and Natural Gas With the dawn of the Industrial Revolution in the 19th Century, we saw the large-scale use of fossil fuels (such as Oil, Natural Gas, and Coal) for industrial activities (factories, electricity). These activities created jobs and over the years people moved from rural areas to cities. In the present day we use these fossil fuels on a much larger scale to power almost every thing, which in turn let out millions of tonnes of carbon dioxide each day increasing the amount of greenhouse gases in the atmosphere, which creates more heat coming down to the earth, melting our polar ice capes and raising sea levels. Further heated seas will increase the number and intensity of hurricanes and other climatic natural disasters around the world (for exampleShow MoreRelatedThe Current Law Regarding Teacher s Liability For Personal Injury1260 Words   |  6 Pagesamendment that ‘the state has a right to recover contributions from employees who are subsequently found to have engaged in conduct other than in good faith and where it amounts to gross negligence.’Subsequently, while the Queensland government has allowed for such legislative framework, transfiguration of political climates may affect the status of this legislation. Consequently, the state governments of Australia have similar policies in regards to the liabilities of teachers for personal injury. UnderRead MoreEffects Of Pollution On The Chinese Economy786 Words   |  4 PagesSouthern climate change forces farmers to migrate which directly contributes to the level of poverty and adds to the suffering of the poor. Traditionally, these individuals would at least be able to survive through farming and growing their own food but in urban areas these individuals will be unable to grow their own food. Collier asserts that the poorest states are in need of rapid economic growth which creates tension between poverty reduction and the perversion of nature. This is mostRead MoreThe Role of Business in Protecting the Environment1568 Words   |  7 Pagesmanufacture of products and delivery of services for consumption involve necessarily the usage and conversion of raw materials. This process unavoidably produces waste. Indeed the processed product itself is destined to become waste as well. That is the nature of consumer goods; they are purchased, used and replaced. The production of the product will consume most of the resources, but even its utilization and eventual disposal consumes more. There is no escaping the fact that what goes in, must (inevitably)Read Moreunnatural disaster coal1169 Words   |  5 PagesUnnatural Disaster? Coal project Research Questions 1) Explain the following: Coal an Unnatural Disaster? An unnatural coal disaster is one caused by human error or negligence, there have been many unnatural coal disasters from past to present such as Turtle Mountain in Canada .Normal erosion due to weather changes played a part in this unnatural disaster but the biggest factor was inadequate support beams .which in turn caused gigantic slab of limestone rock weighing 75millions tons brokeRead MoreBuilding Inside The Home Assembling Industry1304 Words   |  6 Pages With low fund rates more Americans are acquiring homes than any other time in recent memory, however the nature of these mass developed homes is dropping. Envision crushing your spirit for a long time to put something aside for your first home and losing it all and more on the grounds that your home succumbed to a blaze. This is a typical illustration of what may happen when a house is inadequately developed. Home developers are neglecting the highly required wellbeing regulations when figuringRead MoreThe Restoration Of The Library Gardens Complex881 Words   |  4 PagesThe Library Gardens complex is an apartment complex located in an area of the San Francisco Bay amid a damp climate, meaning that it is a â€Å"highly corrosive environment because of the salt water coming off the bay, and the winds and the fog drive that salt water to the buildings and can cause earlier deterioration of the buildings† (Source 1), that combined with improper waterproofing could have led to extensive dry rot in a fairly new building. No destructive inspections were performed on the balconiesRead MoreThe Natural Resources Of The Earth1727 Words   |  7 Pagesenvironment is responding and it all starts by understanding what the Earth already has and needs to continue to maintain. Considering the planet and everything that is done to the Earth is demanded from nature, acknowledging humans’ habits, that are ruining the atmosphere, will encourage an inspiring change towards a healthy and cleaner environment. â€Å"There has been a rapid growth in knowledge and technology, so that humans now face choices†¦ that affect the continuation of humanity and the world withinRead MoreIssues Associated With Climate Change1809 Words   |  8 Pagesbelow. The existence of our nation depends on the commitments that are to emerge from the UN climate change conference in Paris. This statement is not a metaphor, as the disappearance of land territory is a reality; rising se a levels could have Tuvalu completely submerged under water soon. Our primary goal was for these commitments to have legal force, primarily because issues associated with climate change permeate national boundaries. US or Australian emissions, for example, are having adverse effectsRead MoreA Short Note On Alleviate The Water Crisis1872 Words   |  8 Pagescomes destroys everything ahead. And because of the government’s negligence towards environmental matters, the population that was not prepared for this chaos were the first to suffer the consequences. Now, the population has been facing several emergency actions from the government, such as water cutoffs during the day and the increasing water and electricity bills. In addition, the citizens have been facing changes in the climate, which leads to a difficulty in business for many of them. The waterRead MoreEssay about The Detrimental Effects of Global Warming1775 Words   |  8 Pagesmorning sun begins to shed its lig ht on the city below. Turning off the alarm, James removes his Dexcron SleepInhaler 4000 to breathe in what little oxygen he can. Feeling light-headed, he quickly dresses into the day’s apparel consisting of a climate controlled, blue bio-suit and an oxygen tank. Today marks the first day of the month so he turns his calendar as he walks towards the door. He closes the door wondering what caused the world to be this way. All he can remember is that the temperature

Direct Selling Investment Valuation

Question: Describe about the Direct Selling for Investment Valuation. Answer: Part A: Internal and External Factors affecting the Pricing Strategy Internal Factors: Return on investments- the marketing objectives need to focus on the percentage return on the expenditures associated with the products. Cash Flow- The sales price will be structured at a rate that will ensure the return of the production charges (Danziger, Hadar and Morwitz 2014). Market Share- The pricing decision is important for ensuring the new market retaining purposes. External Factors: Customers Expectations: The expectation of the customers and the channel distributors is the major obstacle for setting the price of the product. Elasticity of the Demands: Understanding the changes of the prices as per the market preferences. Direct Competitor Pricing- The direct competition prices of the rivalries affect the pricing structure more significantly. Techniques for determining the prices There are two types of techniques that can be used for setting the price. First, the effective product packaging system would be beneficial for making the products attractive to the customers (Li, Xu and Li 2013). On the other hand, the unique value added features of the products are effective enough to attract the customers. It will suggest the competition with the other rivalries in the market. Short Term Pricing Strategy One of the beneficial short time pricing strategies is the pricing penetration strategy. This strategy refers that the price of the products will be set lower at the initial stage (Phillips and Gully 2015). It will be helpful in attracting the customers with lower prices of the products. Once the product demands get higher, the reasonable price will be implemented. Payment Term Option If concentrated on the payment term option, it is noted that the early payment discounts would be much beneficial. The early payment discounts allows the customers to pay on time, which creates the less impact on the profits of thin-margin products. For instance, the customer can receive the 60 days credit by considering 5% of discount amount. It is a fruitful payment option to attract more customers towards the products. Achieving the selling purpose There should be the media channel, which will connect the customers with the customer care executives (Damodaran 2012). After purchasing the products, the customers need to provide their feedback or the customer care executives need to communicate with the customers to understand whether they are satisfied or not. The after sale service will determine the re-purchasing behaviour of the customers. Responses to the Queries Following up the customers responses is essential to derive the idea about their concerns. Hence, the customer care executives send the mail to the customers for replying to their responses. The customer care executives need to encourage the customers to present their concerns regarding any of the issues that they have been facing while banking with them. In fact, if any of the customers requires discussing over any critical matter, the face-to-face meeting can be arranged accordingly. Accessibility of the Customers a) The customers can access the accurate information by communicating with the customer case executives over the phone call. In case of any other specific queries or confidential matter, the face-to-face dealing will also be beneficial for providing the accurate information to the customers (Ragland, Widmier and Brouthers 2015). b) The online transaction pages are available in the internet. However, in order to maintain the higher security, the direct transaction or card transaction will also be available for the customers. Assessment 2: Part B Skills required for the staffs The efficient and clear communication with the customers is necessary for making the customers aware of the product specifications. Therefore, the staffs need to improve the interpersonal communication skills for communicating with the customers. It helps in building the effective relationship with the customers and generates the sense of reliability. Customer feedback The continuous feedbacks and following up the customers would be helpful for understanding whether they are happy with the products or services. The quality of the products will be determined while setting the pricing strategy. Recognising such aspects would be much beneficial for determining the fair dealings with the customers. Assistance of the Staffs The customer executives can provide the feedback form to the customers where the customers will provide their responses regarding their experiences of using the products. This form is needed to be dropped in the drop boxes set for gathering the feedbacks. Moreover, the customers can provide their feedbacks to the websites of the respective company. If the customers need to discuss any of the critical matter, the service executives will call them up and discuss the matter over the phone call. In case of extreme consequences, the customer care manager may arrange the face-to-face conversation meeting with the customers. References Damodaran, A., 2012.Investment valuation: Tools and techniques for determining the value of any asset(Vol. 666). John Wiley Sons. Danziger, S., Hadar, L. and Morwitz, V.G., 2014. Retailer pricing strategy and consumer choice under price uncertainty.Journal of Consumer Research,41(3), pp.761-774. Ellickson, P.B., Misra, S. and Nair, H.S., 2012. Repositioning dynamics and pricing strategy.Journal of Marketing Research,49(6), pp.750-772. Li, Y., Xu, L. and Li, D., 2013. Examining relationships between the return policy, product quality, and pricing strategy in online direct selling.International Journal of Production Economics,144(2), pp.451-460. Phillips, J.M. and Gully, S.M., 2015.Strategic staffing. Pearson. Ragland, C.B., Widmier, S. and Brouthers, L.E., 2015. A Factor Endowment Approach to International Market Selection for Direct Selling. InIdeas in Marketing: Finding the New and Polishing the Old(pp. 474-474). Springer International Publishing.

Utilitarianism an Example of the Topic Government and Law Essays by

Utilitarianism Utilitarianism is an ethical theory which explains that the morality of an act is dependent on the amount of utility that an action can produce (Rachels & Rachels, 2006). Among the most notable Utilitarian advocates are John Stuart Mill and Jeremy Bentham. For Mill, utilitarianism is equivalent to the greatest happiness principle which entails that am action is right when it tend to promote the greatest good for the greatest number (and tend to minimize the harm and suffering that an action can produce. On the other hand, Bentham suggests that the amount of pleasure or happiness can be calculated using his proposed hedonistic calculus which is drawn by calculating the difference between the pleasure and the pain. Need essay sample on "Utilitarianism" topic? We will write a custom essay sample specifically for you Proceed College Students Very Often Tell EssayLab writers: How much do I have to pay someone to write my essay in time? Essay writers propose: Writing Essay Papers Is Easier With Us Top Rated Essay Writing Service A Website To Write Essays Academic Paper Writing Services Cheap Writing Service Reviews Nevertheless, Utilitarianism has also been subject for ethical debate which is primarily founded on the idea that the utilitarian principle tend to promote only the utility that an action can give even and disregarding the bad outcomes that it can inflict to others. This paper is mainly directed on the issue that questions the moral upbringing of the Utilitarian principle. Two Objections against Utilitarianism One of the very celebrated opponents of the Utilitarian theory is Immanuel Kants Duty Theory. Unlike Utilitarianism, The Kantian Ethics suggests that the morality of an act should not be based on the amount of utility that an action can produce but on the very fact that an acting agent has done his duty unconditionally (Rachels & Rachels, 2006). The most apparent criticism against the Utilitarian principle is that it only looks on the consequences that an action can inflict to the majority of the people. By this, we can deduce that Utilitarianism lacks concern on the part of the minority (Rachels & Rachels, 2006). Plus, it does not always the case that what is good for the majority is the right thing to do. In considering the human rights of the individuals, it is inappropriate to say that what is beneficial for the promotion of the rights of the minority should be overridden by what is beneficial for the promotion of the rights of the majority. Such idea would never be just and fair. The second objection against the utilitarian principle is that it directly goes against what the Kantians second maxim suggests which suggests that one must never treat others only as means for his ends but always as the end (Rachels & Rachels, 2006). This entails that one should not sacrifice the rights of or what is necessary for another person just to give way for the greatest happiness that the greatest number of people can obtain. However, Utilitarian advocates argued that such presuppositions or objections that are raised against the theory itself do not really touches the truest essence of the Utilitarian principle. The utilitarian principles concept of happiness and pleasure does not really suggest the suffering of the minority. The concept of happiness is not really equated with the pleasure or happiness that can be derived from selfish interests. Finally, the Utilitarian Ethics recommends the utilitarian principle not really to provide a justifying principle for the majority but for chiefly to promote human flourishing and the alleviation of suffering of mankind. Thus, it is not true that the utilitarian principle disregards the welfare of the minority. References: Rachels, J. & Rachels S. (2006) The Elements of Moral Philosophy (5th ed.). McGraw-Hill Humanities/Social Sciences/Languages.

Make good writing second nature - Emphasis

Make good writing second nature Make good writing second nature A question for the drivers: how much of the drive to work this morning do you remember? The answer, probably, is not much, because youre so used to the process that you no longer need to consciously think about it. Its the same for learning any new skill, including writing. With sustained effort and attention, the skill becomes second nature. This is why we recommend to clients that they follow up their training day with a Coaching clinic, to reinforce the progress made on the course and follow up on any continuing concerns. There are four stages to learning a new skill, according to a model developed by Gordon Training International, and you have to go through each to reach the point where you can perform the skill well, seemingly without thinking. 1. Unconscious incompetence You dont know what you dont know 2. Conscious incompetence You know what you dont know 3. Conscious competence You know how to do it, but you have to think about it 4. Unconscious competence Youre practised enough to do it automatically. Mistakes are common at the conscious competence stage, even though you know by then what you need to do and how to do it. This is why we offer one-to-one follow-up coaching on all our courses. Before training, we gather writing samples from each participant and analyse them in detail, producing a graph that identifies and quantifies your individual problem areas. We go through this process again after the initial course to see where you have improved and what you still need to work on, so that in the follow-up coaching the trainer can work with you to iron out lingering errors. If you or your staff have been trained by us and would like to arrange follow-up coaching, or you would like to talk about arranging both, email us or call us on +44 (0)1273 732 888.

Prostate Cancer Essay Example | Topics and Well Written Essays - 750 words

Prostate Cancer - Essay Example Significantly, prostate incorporates gland cells that produce some of the seminal fluid and this fluid protects and nourishes sperm cells in semen and supports the ejaculatory ducts, or sperm tubes. The growth of the prostate normally continues till man reaches adulthood and it is maintained after it reaches normal size as long as male hormones are produced."Prostate cancer begins most often in the outer part of the prostate. It is the most common cancer in men older than age 50.In most men, the cancer grows very slowly. In fact, many men with the disease will never know they have the condition. Early prostate cancer is confined to the prostate gland itself, and the majority of patients with this type of cancer can live for years with no problems." (Prostate cancer) In certain cases, prostate cancer may spread from the prostate to nearby lymph nodes, bones or other organs and such spread is generally called metastasis. It is also essential to note that most prostate cancers originate in the posterior prostate gland, while some others start off near the urethra. As the US National Institute of Health suggests, the estimated new cases and deaths from prostate cancer in the United States in 2009 are: new cases of 192,280 and deaths of 27, 360. According to some important surveys, there aremore than2 million American men currently living with prostate cancer. The given data for the year 2009 in the US indicates the relevance of further researches and medical treatment for prostate cancer and this paper makes a reflective analysis of some vital elements of the prostate cancer. In a profound analysis of the prostate cancer, it becomes lucid that it is mainly found in older men, compared to younger ones, and the prostate may get bigger and block the urethra or bladder, when men grow old. Such phenomena within the reproductive system of elder men, in which prostate gets bigger and block the urethra or bladder, will cause difficulty in urination or it will interfere with sexual function. This condition called benign prostatic hyperplasia (BPH) can be corrected through surgery and it is not cancer, although the symptoms of benign prostatic hyperplasia or of other problems in the prostate will be similar to symptoms of prostate cancer. "Possible signs of prostate cancer include a weak flow of urine or frequent urination. These and other symptoms may be caused by prostate cancer. Other conditions may cause the same symptoms." (General Information about Prostate Cancer) It is important to consult a doctor if any of the following problems occur, as it may indicate prostate cancer. Such signs include weak or interrupted flow of urine, frequent urination (especially at night), trouble urinating, pain or burning during urination, blood in the urine or semen, a pain in the back, hips, or pelvis, and painful ejaculation. It is important to comprehend that prostate cancer is one of the most common diseases in the US and the curability of prostate cancer is based on how immediately one identifies the disease. Significantly, the 'cure' rates for prostate cancer, similar to all cancers, describe the percentage of patients likely remaining disease-free for a specific time and it is common that, the earlier

Analysis on Team Dynamics Essay Example | Topics and Well Written Essays - 500 words

Analysis on Team Dynamics - Essay Example Self managed teams are known to operate in a much effective and efficient manner and their productivity levels are even quite high. This is because when trust is bestowed upon employees, they end up learning at a higher rate and they tend to correct their mistakes and face issues on their own instead of depending on a manager to correct them in their operations. One of the major benefits that self managed team is that such teams are able to identify new ways of performing or attaining targets. Since, these teams are not being lead or are not being provided with the objective of attaining targets, members of these teams tend to come up with their own ideas of performing a particular job which can result in methods that are much effective as well as efficient. A major issue with these teams is that they may end up applying methods to work that may result in heavy losses since they implement trial and error method to figure out new ways to perform tasks. A major disadvantage of a manager controlled team is that in such teams decisions are mostly made by the managers and a manager who is directing such teams may not get the time to work on other important tasks. Mistakes and costs in manager lead teams are quite infrequent as they tend to use methods of operations that have already been tries and tested. Different members in a team are awarded with different roles and these roles contribute to the successful operations of a team. According to Belbin’s Team Role Theory, a team requires a Monitor Evaluator in order make contributions that are unbiased in nature and to analyze different solutions available to a team with a neutral mindset (Utley 284). Another role identified is that of an implementer, an implementer is necessary in a self directed team in order to identify a way to implement the strategy that was created by the team. The role of a shaper is even quite necessary in a particular team to ensure that all team members are focused on the target at hand

The History Of Cleopatra VII

The History Of Cleopatra VII Cleopatra VII was the last person to rule Egypt as an Egyptian pharaoh. After her death Egypt became a Roman province. She was a member of the Ptolemaic dynasty (a royal family which ruled Egypt during the Hellinistic Period-323 BC to 146 BC) of Ancient Egypt. She is therefore considered to be a descendant of one of Alexander the Greats generals who had seized control over Egypt after Alexanders death. Cleopatra learned Egyptian unlike other Ptolemies who spoke Greece and refused Egyptian and represented herself as the reincarnation of an Egyptian Goddess. Cleopatra VII ruled originally with her father Ptolemy XII Auletes (commonly name as Auletes and who ruled Egypt from 80 to 58 BC) and later with her brothers, Ptolemy XIII and Ptolemy XIV. Later she became a sole ruler. As pharaoh, she kept good relations with Julius Caesar (Roman General who played a critical role in the transformation from Roman Republic to Roman Empire) that solidified her grip on the throne. After Caesars assassination in 44 BC, she aligned with Mark Antony in opposition to Caesars legal heir and she bore the twins Cleopatra Selene II and Alexander Helios, and another son, Ptolemy Philadelphus. Mark Antony was defeated by Octavian (the future emperor Augustus) and hence Egypt became the Roman province of Aegyptus. Though Cleopatra was an Egyptian pharaoh but she basically belonged to the Ptolemaic dynasty which was Hellenistic. Cleopatras mother language was Greek but still was the first ruler of the dynasty to learn Egyptian. She also adopted Egyptian beliefs and deities. Her patron deity was Isis (a Goddess in Ancient Egyptian religious beliefs) and thus was considered the re-incarnation and embodiment of the goddess. Her death marked the end of the Ptolemaic Kingdom and Hellenistic period and the beginning of the Roman era in the eastern Mediterranean. The above picture displays the bust of Cleopatra VII who is depicted as a great beauty and her legacy still survives in various works of art and dramas. William Shakespeares Antony and Cleopatra, Jules Massenets opera, Clà ©opà ¢tre are some examples of dramatizations inspired by Cleopatras life. REIGN 51 BC TO 12 August 30 BC SUCCESSOR None (Egypt was annexed by Rome) SPOUSE Ptolemy XIII Theos Philopator Ptolemy XIV Julius Caesar (not legally wed) Mark Antony FATHER Ptolemy XII Auletes MOTHER Cleopatra V of Egypt BORN 69 BC DIED 12th August 30 BC (aged 39) BURIAL Burial was done in Alexandria, Egypt Cleopatra in the Roman Civil War In the Roman civil war between the Caesarean party which was led by Mark Antony and Octavian and party led by Marcus Junius Brutus and Gaius Cassius Longinus who assassinated Julius Caesar. Cleopatra sided with the Caesarean party because of her past. Brutus and Cassius together and sailed to the East of the Roman Empire and conquered large areas and established their military bases. Now Cassius wanted to invade Egypt to seize the treasures of that country and to take the revenge from the queen as she refused his request to send him supplies punish the queen for her refusal of Cassius request to send him supplies and her support for Dolabella (a Roman General). At that time in Egypt there was famine and an epidemic which became an important reason why Cassius thought that Egypt could easily be conquered. But still he could not execute the invasion of Egypt because at the end of 43 BC Brutus called him back to Smyrna (an ancient city located at a central and strategic point on the Aegean coast of Anatolia now located in Turkey). Cassius tried to blockade Cleopatras way to the Caesareans. Nevertheless Cleopatra sailed with her military from Alexandria to the west along the Libyan coast to join the Caesarean leaders but she was forced to return to Egypt because her ships were damaged by a violent storm and she became ill. Relationship with Julius Caesar Cleopatra became Caesars mistress, and nine months after their first meeting, in 47 BC, Cleopatra gave birth to their son, Ptolemy Caesar, nicknamed Caesorian , which means little Caesar. At this point Caesar cancelled his plans to annex Egypt, instead backing Cleopatras claim to the throne. After a war lasting six months between the party of Ptolemy XIII and the Roman army of Caesar, Ptolemy XIII was drowned in the Nile (longest river of the world situated in Egypt) and Caesar restored Cleopatra to her throne and assigned her younger brother Ptolemy IV as her new co-rule. Although Cleopatra was 21 years old when they met and Caesar was 52, they became lovers during Caesars stay in Egypt between 48 BC and 47 BC. Cleopatra claimed Caesar was the father of her son and wanted his son to be the heir of Julius Caesar but instead of making his son caesorian, his heir, he chose his grandnephew Octavian. But Caesar even erected a golden statue of Cleopatra represented as Isis in the temple of Venus Genetrix (the mythical ancestress of Caesars family), which was situated at the Forum Julium (a forum built by Julius Caesar in Rome). Caesar was assassinated on 15 March, 44 BC. At that time Cleopatra was in Rome along with her outrages. After Caesars assassination Cleopatra returned to Egypt with her relatives. After the death of Ptolemy XIV who was allegedly poisoned by his elder sister, Cleopatra made her son Caesorian, her successor and gave her an epithet (an epithet as a descriptive word or phrase given to someone) Theos Philopator Philometor which means Father and mother loving God. Cleopatra and Mark Antony Coin of Antony and Cleopatra In 41 BC, Mark Antony, one of the triumvirs (name historians give to the official political alliance of Gaius Julius Caesar Octavians, later known as Augustus) who ruled Rome after the assassination of Julius Caesar. Dellius had to summon Cleopatra to Tarsus (a historical city in south eastern Turkey) to meet there Antony and answer questions about her loyalty. During the Roman civil war she allegedly paid much money to Cassius due to which Antony lost his trust on Dellius. Actually it seemed that in reality Antony wanted Cleopatras promise to support his war against the Parthians (citizens of Parthia a region of North eastern Iran). Cleopatra had Antony order the death of her sister Arsinoe to safeguard herself and her son, Caesarion. Arsinoe at that time was living at the temples of Artemis in Ephesus (Artemis is one of the religious Greek deities which is situated in Ephesus which is an ancient Greek city). On 25 December 40 BC, Cleopatra gave birth to twins fathered by Antony, Alexander Helios and Cleopatra Selene II. Four years later, Antony visited Alexandria again on route to make war with the Parthians. Donations of Alexandria was a religious-political statement by Cleopatra VII and Mark Antony in which they distributed lands of Rome and Parthia amongst Cleopatras children and granted them many titles especially for Caesarian who was the son of Julius Caesar. Donations of Alexandria was announced in late 34 BC, followed by Antonys conquest of Armenia (a client state of roman and Persian Empires stretching from Caspian to Mediterranean sea), Cleopatra and Caesarian were crowned co-rulers of Egypt and Cyprus. Cleopatra Selene II was crowned ruler of Cyrenaica and Libya and Ptolemy Philadelphus was crowned ruler of Phoenicia, Syria, and Cilicia. Donations of Alexandria were also a main reason for The Final war of the Roman Republic. Cleopatra was also given the title of Queen of Kings by Antonio. Her enemies in Rome feared that Cleopatra was planning a war of revenge that was between the whole of East against the Rome and establish herself as empress of the world at Rome and inaugurate a new universal kingdom. Caesarian was given co-regency with Cleopatra and was also given many titles such as god, son of god and king of kings. Egyptians thought Cleopatra to be a reincarnation of goddess Isis, as she called herself (NEA Isis). Relations between Antony and Octavian finally broke down in 33 BC, and Octavian declared a war against Egypt. In 31 BC Antonys forces faced the Romans in a naval action off the coast of Actium. Cleopatra was present with an army of her own. But Octavians invaded Egypt in the Battle of Actium and thus Antony and Cleopatra lost this war and thus the Roman Empire took over the Egypt. As he approached Alexandria, Antonys armies deserted to Octavian on August 1, 30 BC. DEATH This picture above shows the death of Cleopatra which was drawn by Guido Cagnacci in 1658. There have been many stories about the death of Cleopatra VII such as according to the ancient sources; particularly the Roman ones think that Cleopatra killed herself by inducing an Egyptian cobra to bite her. The oldest source is Strabo who was a Greek historian, geographer and a philosopher says that there are two stories: That she applied a toxic ointment OR That she was bitten by an asp. Other authors have questioned these historical accounts, stating that it is possible that Augustus had her killed. In 2010, the German historian Christophe Schaefer challenged all other theories, declaring that the queen had actually been poisoned and died from drinking a mixture of poisons. After studying historic texts and consulting with toxicologists, the historian concluded that the asp could not have caused a slow and pain free death, since the asp (Egyptian cobra) venom paralyses parts of the body, starting with the eyes, before causing death. Schaefer and his toxicologist Dietrich Mebs decided Cleopatra used a mixture of hemlock, wolfsbane and opium. Plutarch, writing about 130 years after the event has also mentioned the asp to be the major reason for Cleopatras death. He reports that Octavian succeeded in capturing Cleopatra in her Mausoleum after the death of Antony. He ordered his freedman Epaphroditus to guard her to prevent her from committing suicide because he allegedly wanted to present her in his triumph. But Cleopatra still was able to suicide by provoking the asp (cobra) to bite her on her arm. Suetonius, writing about the same time as Plutarch, also says Cleopatra died from an asp bite. Shakespeare also gave his own theory on the death of Cleopatra which gives us the image of Cleopatra clutching the snake to her breast. Before him, it was generally agreed that she was bitten on the arm. The site of their Mausoleum (a monument) is uncertain, though it is thought by the Egyptian Antiquities Service, to be in or near the temple of Taposiris Magna south west of Alexandria. Cleopatras son by Caesar, Caesarian, was proclaimed pharaoh by the Egyptians, after Alexandria fell to Octavian. Caesarean was captured and killed by Octavians. CONCLUSION: Why the women in world history were not given due importance? By taking the example of Cleopatra VII, the reasons why women were not given importance are: Cleopatra being the mother was more concerned about her children. She always tried her children to get throne unlike Julius Caesar who chose his grandnephew. Women are more directed towards their own children rather than caring about their kingdom. Cleopatra was not much concerned for her empire or the kingdom and was more aligned towards her family. Donations of Alexandria is the most important example which clearly explains that Cleopatra cared only about her family. She could have given those empires to some more educated or strong and a better person which could have helped her and Antony in the battle against Octavians. Well these were the main reasons why I think women were not given due importance in history.

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Unlike any other form of literature or entertainment, Fairy Tales help children to discover their identity and suggest experiences needed to develop their character. In Bruno Bettelheim’s â€Å"Life Divined from the Inside† Bettelheim states that â€Å"Fairy Tales intimate that a rewarding, good life is within one’s reach despite adversity-but only if one does not shy away from the hazardous struggles without which one can never achieve true identity (Bettelheim 106). Anne Sexton’s â€Å"Cinderella† is a perfect example of Bettelheim’s definition of a Fairy Tale.   Ã‚  Ã‚  Ã‚  Ã‚  The story of Cinderella is a classic story that has had many different versions. Anne Sexton’s version, begins as Cinderella’s mother is on her death bed. She is telling Cinderella to â€Å"Be Devout. Be Good. Then I will smile down from heaven in the seam of a cloud.† (Sexton 85) With the death of Cinderella’s mother, we get Bettelheim’s first example of a Fairy Tale; adversity for Cinderella. As the story goes on, Cinderella’s father marries another woman. She has two daughters, making a family of five. Cinderella’s father dies, leaving Cinderella’s stepmother in charge of Cinderella and the family. With the loss of her father, it’s seem that all Cinderella can face is adversity. Cinderella became her stepmother and stepsisters maid; but kept her chin up. She tried to lead a good life, but faced so much adversity with her family. They made her sleep on the sooty hearth every night; which made her loo k li...

Central Processing Unit and Memory Location

MICROPROCESSOR 8085 †¢ Reference Book: – Ramesh S. Goankar, â€Å"Microprocessor Architecture, Programming and Applications with 8085†, 5th Edition, Prentice Hall †¢ Week 1 – Basic Concept and Ideas about Microprocessor. †¢ Week 2 – Architecture of 8085 †¢ Week 3 – Addressing Modes and Instruction set of 8085 †¢ Week 4 – Interrupts of 8085 †¢ Week 5 onwards – Peripherals. Basic Concepts of Microprocessors †¢ Differences between: – Microcomputer – a computer with a microprocessor as its CPU. Includes memory, I/O etc. Microprocessor – silicon chip which includes ALU, register circuits & control circuits – Microcontroller – silicon chip which includes microprocessor, memory & I/O in a single package. What is a Microprocessor? †¢ The word comes from the combination micro and processor. – Processor means a device that processes whatever. In this context proces sor means a device that processes numbers, specifically binary numbers, 0’s and 1’s. †¢ To process means to manipulate. It is a general term that describes all manipulation. Again in this content, it means to perform certain operations on the numbers that depend on the microprocessor’s design.What about micro? †¢ Micro is a new addition. – In the late 1960’s, processors were built using discrete elements. †¢ These devices performed the required operation, but were too large and too slow. – In the early 1970’s the microchip was invented. All of the components that made up the processor were now placed on a single piece of silicon. The size became several thousand times smaller and the speed became several hundred times faster. The â€Å"Micro†Processor was born. Was there ever a â€Å"mini†processor? †¢ No. – It went directly from discrete elements to a single chip. However, omparing todayâ€⠄¢s microprocessors to the ones built in the early 1970’s you find an extreme increase in the amount of integration. †¢ So, What is a microprocessor? Definition of the Microprocessor The microprocessor is a programmable device that takes in numbers, performs on them arithmetic or logical operations according to the program stored in memory and then produces other numbers as a result. Definition (Contd. ) †¢ Lets expand each of the underlined words: – Programmable device: The microprocessor can perform different sets of operations on the data it receives depending on the sequence of instructions supplied in the given program.By changing the program, the microprocessor manipulates the data in different ways. – Instructions: Each microprocessor is designed to execute a specific group of operations. This group of operations is called an instruction set. This instruction set defines what the microprocessor can and cannot do. Definition (Contd. ) – Ta kes in: The data that the microprocessor manipulates must come from somewhere. †¢ It comes from what is called â€Å"input devices†. †¢ These are devices that bring data into the system from the outside world. †¢ These represent devices such as a keyboard, a mouse, switches, and the like.Definition (Contd. ) – Numbers: The microprocessor has a very narrow view on life. It only understands binary numbers. A binary digit is called a bit (which comes from binary digit). The microprocessor recognizes and processes a group of bits together. This group of bits is called a â€Å"word†. The number of bits in a Microprocessor’s word, is a measure of its â€Å"abilities†. Definition (Contd. ) – Words, Bytes, etc. †¢ The earliest microprocessor (the Intel 8088 and Motorola’s 6800) recognized 8-bit words. – They processed information 8-bits at a time. That’s why they are called â€Å"8-bit processors†.They can handle large numbers, but in order to process these numbers, they broke them into 8-bit pieces and processed each group of 8-bits separately. †¢ Later microprocessors (8086 and 68000) were designed with 16-bit words. – A group of 8-bits were referred to as a â€Å"half-word† or â€Å"byte†. – A group of 4 bits is called a â€Å"nibble†. – Also, 32 bit groups were given the name â€Å"long word†. †¢ Today, all processors manipulate at least 32 bits at a time and there exists microprocessors that can process 64, 80, 128 bits Definition (Contd. ) – Arithmetic and Logic Operations: Every microprocessor has arithmetic operations such as add and subtract as part of its instruction set. – Most microprocessors will have operations such as multiply and divide. – Some of the newer ones will have complex operations such as square root. †¢ In addition, microprocessors have logic operations as well. Such as AND, OR, XOR, shift left, shift right, etc. †¢ Again, the number and types of operations define the microprocessor’s instruction set and depends on the specific microprocessor. Definition (Contd. ) – Stored in memory : †¢ First, what is memory? – Memory is the location where information is kept while not in current use. Memory is a collection of storage devices. Usually, each storage device holds one bit. Also, in most kinds of memory, these storage devices are grouped into groups of 8. These 8 storage locations can only be accessed together. So, one can only read or write in terms of bytes to and form memory. – Memory is usually measured by the number of bytes it can hold. It is measured in Kilos, Megas and lately Gigas. A Kilo in computer language is 210 =1024. So, a KB (KiloByte) is 1024 bytes. Mega is 1024 Kilos and Giga is 1024 Mega. Definition (Contd. ) – Stored in memory: †¢ When a program is entered into a computer, it is st ored in memory.Then as the microprocessor starts to execute the instructions, it brings the instructions from memory one at a time. †¢ Memory is also used to hold the data. – The microprocessor reads (brings in) the data from memory when it needs it and writes (stores) the results into memory when it is done. Definition (Contd. ) – Produces: For the user to see the result of the execution of the program, the results must be presented in a human readable form. †¢ The results must be presented on an output device. †¢ This can be the monitor, a paper from the printer, a simple LED or many other forms. A Microprocessor-based systemFrom the above description, we can draw the following block diagram to represent a microprocessor-based system: Input Output Memory Inside The Microprocessor †¢ Internally, the microprocessor is made up of 3 main units. – The Arithmetic/Logic Unit (ALU) – The Control Unit. – An array of registers for holdi ng data while it is being manipulated. Organization of a microprocessorbased system †¢ Let’s expand the picture a bit. I/O Input / Output ALU Register Array System Bus Memory ROM RAM Control Memory †¢ Memory stores information such as instructions and data in binary format (0 and 1).It provides this information to the microprocessor whenever it is needed. †¢ Usually, there is a memory â€Å"sub-system† in a microprocessor-based system. This sub-system includes: – The registers inside the microprocessor – Read Only Memory (ROM) †¢ used to store information that does not change. – Random Access Memory (RAM) (also known as Read/Write Memory). †¢ used to store information supplied by the user. Such as programs and data. Memory Map and Addresses †¢ The memory map is a picture representation of the address range and shows where the different memory chips are located within the address range. 000 0000 EPROM 3FFF 4400 Address Range of EPROM Chip Address Range RAM 1 RAM 2 RAM 3 Address Range of 1st RAM Chip 5FFF 6000 Address Range of 2nd RAM Chip 8FFF 9000 A3FF A400 Address Range of 3rd RAM Chip RAM 4 F7FF FFFF Address Range of 4th RAM Chip Memory †¢ To execute a program: – the user enters its instructions in binary format into the memory. – The microprocessor then reads these instructions and whatever data is needed from memory, executes the instructions and places the results either in memory or produces it on an output device. The three cycle instruction execution model To execute a program, the microprocessor â€Å"reads† each instruction from memory, â€Å"interprets† it, then â€Å"executes† it. †¢ To use the right names for the cycles: – The microprocessor fetches each instruction, – decodes it, – Then executes it. †¢ This sequence is continued until all instructions are performed. Machine Language †¢ The number of bits tha t form the â€Å"word† of a microprocessor is fixed for that particular processor. – These bits define a maximum number of combinations. †¢ For example an 8-bit microprocessor can have at most 28 = 256 different combinations. However, in most microprocessors, not all of these combinations are used. – Certain patterns are chosen and assigned specific meanings. – Each of these patterns forms an instruction for the microprocessor. – The complete set of patterns makes up the microprocessor’s machine language. The 8085 Machine Language †¢ The 8085 (from Intel) is an 8-bit microprocessor. – The 8085 uses a total of 246 bit patterns to form its instruction set. – These 246 patterns represent only 74 instructions. †¢ The reason for the difference is that some (actually most) instructions have multiple different formats. Because it is very difficult to enter the bit patterns correctly, they are usually entered in hexadeci mal instead of binary. †¢ For example, the combination 0011 1100 which translates into â€Å"increment the number in the register called the accumulator†, is usually entered as 3C. Assembly Language †¢ Entering the instructions using hexadecimal is quite easier than entering the binary combinations. – However, it still is difficult to understand what a program written in hexadecimal does. – So, each company defines a symbolic code for the instructions. – These codes are called â€Å"mnemonics†. The mnemonic for each instruction is usually a group of letters that suggest the operation performed. Assembly Language †¢ Using the same example from before, – 00111100 translates to 3C in hexadecimal (OPCODE) – Its mnemonic is: â€Å"INR A†. – INR stands for â€Å"increment register† and A is short for accumulator. †¢ Another example is: 1000 0000, – Which translates to 80 in hexadecimal. â€⠀œ Its mnemonic is â€Å"ADD B†. – â€Å"Add register B to the accumulator and keep the result in the accumulator†. Assembly Language †¢ It is important to remember that a machine language and its associated assembly language are completely machine dependent. In other words, they are not transferable from one microprocessor to a different one. †¢ For example, Motorolla has an 8-bit microprocessor called the 6800. – The 8085 machine language is very different from that of the 6800. So is the assembly language. – A program written for the 8085 cannot be executed on the 6800 and vice versa. â€Å"Assembling† The Program †¢ How does assembly language get translated into machine language? – There are two ways: – 1st there is â€Å"hand assembly†. †¢ The programmer translates each assembly language instruction into its equivalent hexadecimal code (machine language).Then the hexadecimal code is entered into memory. – The other possibility is a program called an â€Å"assembler†, which does the translation automatically. 8085 Microprocessor Architecture †¢ †¢ †¢ †¢ †¢ †¢ 8-bit general purpose  µp Capable of addressing 64 k of memory Has 40 pins Requires +5 v power supply Can operate with 3 MHz clock 8085 upward compatible Pins Power Supply: +5 V Frequency Generator is connected to those pins Input/Output/ Memory Read Write Multiplexed Address Data Bus Address latch Enable Address Bus †¢ System Bus – wires connecting memory & I/O to microprocessor – Address Bus Unidirectional †¢ Identifying peripheral or memory location – Data Bus †¢ Bidirectional †¢ Transferring data – Control Bus †¢ Synchronization signals †¢ Timing signals †¢ Control signal Architecture of Intel 8085 Microprocessor Intel 8085 Microprocessor †¢ Microprocessor consists of: – – – – – Control unit: control microprocessor operations. ALU: performs data processing function. Registers: provide storage internal to CPU. Interrupts Internal data bus The ALU †¢ In addition to the arithmetic & logic circuits, the ALU includes the accumulator, which is part of every arithmetic & logic operation. Also, the ALU includes a temporary register used for holding data temporarily during the execution of the operation. This temporary register is not accessible by the programmer. †¢ Registers – General Purpose Registers †¢ B, C, D, E, H & L (8 bit registers) †¢ Can be used singly †¢ Or can be used as 16 bit register pairs – BC, DE, HL †¢ H & L can be used as a data pointer (holds memory address) – Special Purpose Registers †¢ Accumulator (8 bit register) – Store 8 bit data – Store the result of an operation – Store 8 bit data during I/O transfer Accumulator Flags B C D E H L Program Counter Stack Pointer Address 6 8 Data †¢ Flag Register – 8 bit register – shows the status of the microprocessor before/after an operation – S (sign flag), Z (zero flag), AC (auxillary carry flag), P (parity flag) & CY (carry flag) D7 S D6 Z D5 X D4 AC D3 X D2 P D1 X D0 CY – Sign Flag †¢ Used for indicating the sign of the data in the accumulator †¢ The sign flag is set if negative (1 – negative) †¢ The sign flag is reset if positive (0 –positive) †¢ Zero Flag – Is set if result obtained after an operation is 0 – Is set following an increment or decrement operation of that register 10110011 + 01001101 ————–1 00000000 †¢ Carry Flag Is set if there is a carry or borrow from arithmetic operation 1011 0101 + 0110 1100 ————–Carry 1 0010 0001 1011 0101 – 1100 1100 ————–Borrow 1 1110 1001 †¢ Auxillary Carry Flag – Is set if there is a carry out of bit 3 †¢ Parity Flag – Is set if parity is even – Is cleared if parity is odd The Internal Architecture †¢ We have already discussed the general purpose registers, the Accumulator, and the flags. †¢ The Program Counter (PC) – This is a register that is used to control the sequencing of the execution of instructions. – This register always holds the address of the next instruction. Since it holds an address, it must be 16 bits wide. The Internal Architecture †¢ The Stack pointer – The stack pointer is also a 16-bit register that is used to point into memory. – The memory this register points to is a special area called the stack. – The stack is an area of memory used to hold data that will be retreived soon. – The stack is usually accessed in a Last In First Out (LIFO) fashion. Non Programmable Registers †¢ Instruction Register & Decoder – Inst ruction is stored in IR after fetched by processor – Decoder decodes instruction in IR Internal Clock generator – 3. 125 MHz internally – 6. 5 MHz externally The Address and Data Busses †¢ The address bus has 8 signal lines A8 – A15 which are unidirectional. †¢ The other 8 address bits are multiplexed (time shared) with the 8 data bits. – So, the bits AD0 – AD7 are bi-directional and serve as A0 – A7 and D0 – D7 at the same time. †¢ During the execution of the instruction, these lines carry the address bits during the early part, then during the late parts of the execution, they carry the 8 data bits. – In order to separate the address from the data, we can use a latch to save the value before the function of the bits changes. Demultiplexing AD7-AD0 From the above description, it becomes obvious that the AD7– AD0 lines are serving a dual purpose and that they need to be demultiplexed to get all the information. – The high order bits of the address remain on the bus for three clock periods. However, the low order bits remain for only one clock period and they would be lost if they are not saved externally. Also, notice that the low order bits of the address disappear when they are needed most. – To make sure we have the entire address for the full three clock cycles, we will use an external latch to save the value of AD7– AD0 when it is carrying the address bits.We use the ALE signal to enable this latch. Demultiplexing AD7-AD0 8085 A15-A8 ALE AD7-AD0 Latch A7- A0 D7- D0 – Given that ALE operates as a pulse during T1, we will be able to latch the address. Then when ALE goes low, the address is saved and the AD7– AD0 lines can be used for their purpose as the bi-directional data lines. Demultiplexing the Bus AD7 – AD0 †¢ †¢ †¢ †¢ The high order address is placed on the address bus and hold for 3 clk periods, The low o rder address is lost after the first clk period, this address needs to be hold however we need to use latch The address AD7 – AD0 is connected as inputs to the latch 74LS373.The ALE signal is connected to the enable (G) pin of the latch and the OC – Output control – of the latch is grounded The Overall Picture †¢ Putting all of the concepts together, we get: A15- A10 Chip Selection Circuit 8085 A15-A8 ALE AD7-AD0 Latch CS A9- A0 A7- A0 1K Byte Memory Chip WR RD IO/M D7- D0 RD WR Introduction to 8085 Instructions The 8085 Instructions – Since the 8085 is an 8-bit device it can have up to 28 (256) instructions. †¢ However, the 8085 only uses 246 combinations that represent a total of 74 instructions. – Most of the instructions have more than one format. These instructions can be grouped into five different groups: †¢ †¢ †¢ †¢ †¢ Data Transfer Operations Arithmetic Operations Logic Operations Branch Operations Machin e Control Operations Instruction and Data Formats †¢ Each instruction has two parts. – The first part is the task or operation to be performed. †¢ This part is called the â€Å"opcode† (operation code). – The second part is the data to be operated on †¢ Called the â€Å"operand†. Data Transfer Operations – These operations simply COPY the data from the source to the destination. – MOV, MVI, LDA, and STA – They transfer: †¢ †¢ †¢ †¢ Data between registers.Data Byte to a register or memory location. Data between a memory location and a register. Data between an IO Device and the accumulator. – The data in the source is not changed. The LXI instruction †¢ The 8085 provides an instruction to place the 16-bit data into the register pair in one step. †¢ LXI Rp, (Load eXtended Immediate) – The instruction LXI B 4000H will place the 16-bit number 4000 into the register pair B, C. â₠¬ ¢ The upper two digits are placed in the 1st register of the pair and the lower two digits in the 2nd . B 40 00 C LXI B 40 00H The Memory â€Å"Register† Most of the instructions of the 8085 can use a memory location in place of a register. – The memory location will become the â€Å"memory† register M. †¢ MOV M B – copy the data from register B into a memory location. – Which memory location? †¢ The memory location is identified by the contents of the HL register pair. – The 16-bit contents of the HL register pair are treated as a 16-bit address and used to identify the memory location. Using the Other Register Pairs – There is also an instruction for moving data from memory to the accumulator without disturbing the contents of the H and L register. †¢ LDAX Rp (LoaD Accumulator eXtended) Copy the 8-bit contents of the memory location identified by the Rp register pair into the Accumulator. – This instruction o nly uses the BC or DE pair. – It does not accept the HL pair. Indirect Addressing Mode †¢ Using data in memory directly (without loading first into a Microprocessor’s register) is called Indirect Addressing. †¢ Indirect addressing uses the data in a register pair as a 16-bit address to identify the memory location being accessed. – The HL register pair is always used in conjunction with the memory register â€Å"M†. – The BC and DE register pairs can be used to load data into the Accumultor using indirect addressing.Arithmetic Operations – Addition (ADD, ADI): – Any 8-bit number. – The contents of a register. – The contents of a memory location. †¢ Can be added to the contents of the accumulator and the result is stored in the accumulator. – Subtraction (SUB, SUI): – Any 8-bit number – The contents of a register – The contents of a memory location †¢ Can be subtracted from the contents of the accumulator. The result is stored in the accumulator. Arithmetic Operations Related to Memory †¢ These instructions perform an arithmetic operation using the contents of a memory location while they are still in memory. ADD – SUB – INR M M M / DCR M †¢ Add the contents of M to the Accumulator †¢ Sub the contents of M from the Accumulator †¢ Increment/decrement the contents of the memory location in place. – All of these use the contents of the HL register pair to identify the memory location being used. Arithmetic Operations – Increment (INR) and Decrement (DCR): †¢ The 8-bit contents of any memory location or any register can be directly incremented or decremented by 1. †¢ No need to disturb the contents of the accumulator. Manipulating Addresses †¢ Now that we have a 16-bit address in a register pair, how do we manipulate it? It is possible to manipulate a 16-bit address stored in a register pair as one entity using some special instructions. †¢ INX Rp †¢ DCX Rp (Increment the 16-bit number in the register pair) (Decrement the 16-bit number in the register pair) – The register pair is incremented or decremented as one entity. No need to worry about a carry from the lower 8-bits to the upper. It is taken care of automatically. Logic Operations †¢ These instructions perform logic operations on the contents of the accumulator. – ANA, ANI, ORA, ORI, XRA and XRI †¢ Source: Accumulator and – An 8-bit number – The contents of a register – The contents of a memory location Destination: Accumulator ANA R/M ANI # ORA ORI XRA XRI R/M # R/M # AND Accumulator With Reg/Mem AND Accumulator With an 8-bit number OR Accumulator With Reg/Mem OR Accumulator With an 8-bit number XOR Accumulator With Reg/Mem XOR Accumulator With an 8-bit number Logic Operations – Complement: †¢ 1’s complement of the contents of the accumulato r. CMA No operand Additional Logic Operations †¢ Rotate – Rotate the contents of the accumulator one position to the left or right. – RLC – RAL – RRC – RAR Rotate the accumulator left. Bit 7 goes to bit 0 AND the Carry flag. Rotate the accumulator left through the carry.Bit 7 goes to the carry and carry goes to bit 0. Rotate the accumulator right. Bit 0 goes to bit 7 AND the Carry flag. Rotate the accumulator right through the carry. Bit 0 goes to the carry and carry goes to bit 7. RLC vs. RLA Carry Flag †¢ RLC 7 6 5 4 3 2 1 0 Accumulator Carry Flag †¢ RAL 7 6 5 4 3 2 1 0 Accumulator Logical Operations †¢ Compare †¢ Compare the contents of a register or memory location with the contents of the accumulator. – CMP R/M Compare the contents of the register or memory location to the contents of the accumulator. Compare the 8-bit number to the contents of the accumulator. CPI # †¢ The compare instruction sets the flag s (Z, Cy, and S). †¢ The compare is done using an internal subtraction that does not change the contents of the accumulator. A – (R / M / #) Branch Operations †¢ Two types: – Unconditional branch. †¢ Go to a new location no matter what. – Conditional branch. †¢ Go to a new location if the condition is true. Unconditional Branch – JMP Address †¢ Jump to the address specified (Go to). – CALL Address †¢ Jump to the address specified but treat it as a subroutine. – RET †¢ Return from a subroutine. – The addresses supplied to all branch operations must be 16-bits.Conditional Branch – Go to new location if a specified condition is met. †¢ JZ Address (Jump on Zero) – Go to address specified if the Zero flag is set. †¢ JNZ Address (Jump on NOT Zero) – Go to address specified if the Zero flag is not set. †¢ JC Address (Jump on Carry) – Go to the address specified if the Carry flag is set. †¢ JNC Address (Jump on No Carry) – Go to the address specified if the Carry flag is not set. †¢ JP †¢ JM Address (Jump on Plus) Address (Jump on Minus) – Go to the address specified if the Sign flag is not set – Go to the address specified if the Sign flag is set.Machine Control – HLT †¢ Stop executing the program. – NOP †¢ No operation †¢ Exactly as it says, do nothing. †¢ Usually used for delay or to replace instructions during debugging. Operand Types †¢ There are different ways for specifying the operand: – There may not be an operand (implied operand) †¢ CMA – The operand may be an 8-bit number (immediate data) †¢ ADI 4FH – The operand may be an internal register (register) †¢ SUB B – The operand may be a 16-bit address (memory address) †¢ LDA 4000H Instruction Size †¢ Depending on the operand type, the instruction may have diff erent sizes.It will occupy a different number of memory bytes. – Typically, all instructions occupy one byte only. – The exception is any instruction that contains immediate data or a memory address. †¢ Instructions that include immediate data use two bytes. – One for the opcode and the other for the 8-bit data. †¢ Instructions that include a memory address occupy three bytes. – One for the opcode, and the other two for the 16-bit address. Instruction with Immediate Date †¢ Operation: Load an 8-bit number into the accumulator. – MVI A, 32 †¢ Operation: MVI A †¢ Operand: The number 32 †¢ Binary Code: 0011 1110 3E 1st byte. 011 0010 32 2nd byte. Instruction with a Memory Address †¢ Operation: go to address 2085. – Instruction: JMP 2085 †¢ Opcode: JMP †¢ Operand: 2085 †¢ Binary code: 1100 0011 C3 1000 0101 85 0010 0000 20 1st byte. 2nd byte 3rd byte Addressing Modes †¢ The microprocessor ha s different ways of specifying the data for the instruction. These are called â€Å"addressing modes†. †¢ The 8085 has four addressing modes: – – – – Implied Immediate Direct Indirect CMA MVI B, 45 LDA 4000 LDAX B †¢ Load the accumulator with the contents of the memory location whose address is stored in the register pair BC). Data Formats In an 8-bit microprocessor, data can be represented in one of four formats: †¢ †¢ †¢ †¢ ASCII BCD Signed Integer Unsigned Integer. – It is important to recognize that the microprocessor deals with 0’s and 1’s. †¢ It deals with values as strings of bits. †¢ It is the job of the user to add a meaning to these strings. Data Formats †¢ Assume the accumulator contains the following value: 0100 0001. – There are four ways of reading this value: †¢ It is an unsigned integer expressed in binary, the equivalent decimal number would be 65. †¢ It is a number expressed in BCD (Binary Coded Decimal) format. That would make it, 41. It is an ASCII representation of a letter. That would make it the letter A. †¢ It is a string of 0’s and 1’s where the 0th and the 6th bits are set to 1 while all other bits are set to 0. ASCII stands for American Standard Code for Information Interchange. Counters & Time Delays Counters †¢ A loop counter is set up by loading a register with a certain value †¢ Then using the DCR (to decrement) and INR (to increment) the contents of the register are updated. †¢ A loop is set up with a conditional jump instruction that loops back or not depending on whether the count has reached the termination count.Counters †¢ The operation of a loop counter can be described using the following flowchart. Initialize Body of loop Update the count No Is this Final Count? Yes Sample ALP for implementing a loop Using DCR instruction MVI C, 15H LOOP DCR C JNZ LOOP Using a Regist er Pair as a Loop Counter †¢ Using a single register, one can repeat a loop for a maximum count of 255 times. †¢ It is possible to increase this count by using a register pair for the loop counter instead of the single register. – A minor problem arises in how to test for the final count since DCX and INX do not modify the flags. However, if the loop is looking for when the count becomes zero, we can use a small trick by ORing the two registers in the pair and then checking the zero flag. Using a Register Pair as a Loop Counter †¢ The following is an example of a loop set up with a register pair as the loop counter. LXI B, 1000H LOOP DCX B MOV A, C ORA B JNZ LOOP Delays †¢ It was shown in Chapter 2 that each instruction passes through different combinations of Fetch, Memory Read, and Memory Write cycles. †¢ Knowing the combinations of cycles, one can calculate how long such an instruction would require to complete. The table in Appendix F of the book contains a column with the title B/M/T. – B for Number of Bytes – M for Number of Machine Cycles – T for Number of T-State. Delays †¢ Knowing how many T-States an instruction requires, and keeping in mind that a T-State is one clock cycle long, we can calculate the time using the following formula: Delay = No. of T-States / Frequency †¢ For example a â€Å"MVI† instruction uses 7 T-States. Therefore, if the Microprocessor is running at 2 MHz, the instruction would require 3. 5  µSeconds to complete. Delay loops †¢ We can use a loop to produce a certain amount of time delay in a program. The following is an example of a delay loop: MVI C, FFH LOOP DCR C JNZ LOOP 7 T-States 4 T-States 10 T-States †¢ The first instruction initializes the loop counter and is executed only once requiring only 7 T-States. †¢ The following two instructions form a loop that requires 14 T-States to execute and is repeated 255 times until C becomes 0. Del ay Loops (Contd. ) †¢ We need to keep in mind though that in the last iteration of the loop, the JNZ instruction will fail and require only 7 T-States rather than the 10. †¢ Therefore, we must deduct 3 T-States from the total delay to get an accurate delay calculation. To calculate the delay, we use the following formula: Tdelay = TO + TL – Tdelay = total delay – TO = delay outside the loop – TL = delay of the loop †¢ TO is the sum of all delays outside the loop. Delay Loops (Contd. ) †¢ Using these formulas, we can calculate the time delay for the previous example: †¢ TO = 7 T-States – Delay of the MVI instruction †¢ TL = (14 X 255) – 3 = 3567 T-States – 14 T-States for the 2 instructions repeated 255 times (FF16 = 25510) reduced by the 3 T-States for the final JNZ. Using a Register Pair as a Loop Counter †¢ Using a single register, one can repeat a loop for a maximum count of 255 times. It is possible to increase this count by using a register pair for the loop counter instead of the single register. – A minor problem arises in how to test for the final count since DCX and INX do not modify the flags. – However, if the loop is looking for when the count becomes zero, we can use a small trick by ORing the two registers in the pair and then checking the zero flag. Using a Register Pair as a Loop Counter †¢ The following is an example of a delay loop set up with a register pair as the loop counter. LXI B, 1000H LOOP DCX B MOV A, C ORA B JNZ LOOP 10 T-States 6 T-States 4 T-States 4 T-States 10 T-StatesUsing a Register Pair as a Loop Counter †¢ Using the same formula from before, we can calculate: †¢ TO = 10 T-States – The delay for the LXI instruction †¢ TL = (24 X 4096) – 3 = 98301 T- States – 24 T-States for the 4 instructions in the loop repeated 4096 times (100016 = 409610) reduced by the 3 TStates for the JNZ in the last iterat ion. Nested Loops †¢ Nested loops can be easily setup in Assembly language by using two registers for the two loop counters and updating the right register in the right loop. – In the figure, the body of loop2 can be before or after loop1.Initialize loop 2 Body of loop 2 Initialize loop 1 Body of loop 1 Update the count1 No Is this Final Count? Yes Update the count 2 No Is this Final Count? Yes Nested Loops for Delay †¢ Instead (or in conjunction with) Register Pairs, a nested loop structure can be used to increase the total delay produced. MVI B, 10H LOOP2 MVI C, FFH LOOP1 DCR C JNZ LOOP1 DCR B JNZ LOOP2 7 T-States 7 T-States 4 T-States 10 T-States 4 T-States 10 T-States Delay Calculation of Nested Loops †¢ The calculation remains the same except that it the formula must be applied recursively to each loop. Start with the inner loop, then plug that delay in the calculation of the outer loop. †¢ Delay of inner loop – TO1 = 7 T-States †¢ MVI C, FFH instruction – TL1 = (255 X 14) – 3 = 3567 T-States †¢ 14 T-States for the DCR C and JNZ instructions repeated 255 Delay Calculation of Nested Loops †¢ Delay of outer loop – TO2 = 7 T-States †¢ MVI B, 10H instruction – TL1 = (16 X (14 + 3574)) – 3 = 57405 T-States †¢ 14 T-States for the DCR B and JNZ instructions and 3574 T-States for loop1 repeated 16 times (1016 = 1610) minus 3 for the final JNZ. – TDelay = 7 + 57405 = 57412 T-States †¢ Total Delay – TDelay = 57412 X 0. 5  µSec = 28. 06 mSec Increasing the delay †¢ The delay can be further increased by using register pairs for each of the loop counters in the nested loops setup. †¢ It can also be increased by adding dummy instructions (like NOP) in the body of the loop. Timing Diagram Representation of Various Control signals generated during Execution of an Instruction. Following Buses and Control Signals must be shown in a Timing Diagram: â € ¢Higher Order Address Bus. †¢Lower Address/Data bus †¢ALE †¢RD †¢WR †¢IO/M Timing Diagram Instruction: A000h MOV A,B Corresponding Coding: A000h 78 Timing Diagram Instruction: A000h MOV A,B Corresponding Coding: A000h 78OFC 8085 Memory Timing Diagram Instruction: A000h MOV A,B 00h T1 T2 T3 T4 A0h A15- A8 (Higher Order Address bus) Corresponding Coding: A000h 78 78h ALE RD OFC WR 8085 Memory IO/M Op-code fetch Cycle Timing Diagram Instruction: A000h MVI A,45h Corresponding Coding: A000h A001h 3E 45 Timing Diagram Instruction: A000h MVI A,45h OFC MEMR Corresponding Coding: A000h A001h 3E 45 8085 Memory Timing Diagram T1 T2 T3 T4 T5 T6 T7 A0h A0h A15- A8 (Higher Order Address bus) 00h 3Eh 01h 45h DA7-DA0 (Lower order address/data Bus) Instruction: A000h MVI A,45h Corresponding Coding: A000h A001h 3E 45 WR RD ALEIO/M Op-Code Fetch Cycle Memory Read Cycle Timing Diagram Instruction: A000h LXI A,FO45h Corresponding Coding: A000h A001h A002h 21 45 F0 Timing Dia gram Instruction: A000h LXI A,FO45h OFC MEMR MEMR Corresponding Coding: A000h A001h A002h 21 45 F0 8085 Memory Timing Diagram Op-Code Fetch Cycle Memory Read Cycle Memory Read Cycle T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 A0h A0h A0h A15- A8 (Higher Order Address bus) 00h 21h 01h 45h 02h F0h DA7-DA0 (Lower order address/data Bus) ALE RD WR IO/M Timing Diagram Instruction: A000h MOV A,M Corresponding Coding: A000h 7E Timing Diagram Instruction: A000h MOV A,MOFC MEMR Corresponding Coding: A000h 7E 8085 Memory Timing Diagram T1 T2 T3 T4 T5 T6 T7 A0h Content Of Reg H A15- A8 (Higher Order Address bus) Instruction: A000h MOV A,M Corresponding Coding: A000h 7E 00h 7Eh L Reg Content Of M DA7-DA0 (Lower order address/data Bus) ALE RD WR IO/M Op-Code Fetch Cycle Memory Read Cycle Timing Diagram Instruction: A000h MOV M,A Corresponding Coding: A000h 77 Timing Diagram Instruction: A000h MOV M,A OFC MEMW Corresponding Coding: A000h 77 8085 Memory Timing Diagram T1 T2 T3 T4 T5 T6 T7 A0h Content Of Reg H A15- A8 (Higher Order Address bus)Instruction: A000h MOV M,A Corresponding Coding: A000h 77 00h 7Eh L Reg Content of Reg A DA7-DA0 (Lower order address/data Bus) ALE RD WR IO/M Op-Code Fetch Cycle Memory Write Cycle Chapter 9 Stack and Subroutines The Stack †¢ The stack is an area of memory identified by the programmer for temporary storage of information. †¢ The stack is a LIFO structure. – Last In First Out. †¢ The stack normally grows backwards into memory. – In other words, the programmer defines the bottom of the stack and the stack grows up into reducing address range. The Stack grows backwards into memory Memory Bottom of the Stack The Stack Given that the stack grows backwards into memory, it is customary to place the bottom of the stack at the end of memory to keep it as far away from user programs as possible. †¢ In the 8085, the stack is defined by setting the SP (Stack Pointer) register. LXI SP, FFFFH †¢ This sets the Stack Pointer to location FFFFH (end of memory for the 8085). Saving Information on the Stack †¢ Information is saved on the stack by PUSHing it on. – It is retrieved from the stack by POPing it off. †¢ The 8085 provides two instructions: PUSH and POP for storing information on the stack and retrieving it back. – Both PUSH and POP work with register pairs ONLY.The PUSH Instruction †¢ PUSH B – Decrement SP – Copy the contents of register B to the memory location pointed to by SP – Decrement BSP C F3 12 – Copy the contents of register C to the memory location pointed to by SP F3 FFFB FFFC FFFD FFFE FFFF 12 SP The POP Instruction †¢ POP D – Copy the contents of the memory location pointed to by the SP to register E – Increment SP – Copy the contents of the memory location D E F3 12 pointed to by the SP to register D – Increment SP F3 SP FFFB FFFC FFFD FFFE FFFF 12 Operation of the Stack †¢ During pushing, the stack operates in a â€Å"decrement then store† style. The stack pointer is decremented first, then the information is placed on the stack. †¢ During poping, the stack operates in a â€Å"use then increment† style. – The information is retrieved from the top of the the stack and then the pointer is incremented. †¢ The SP pointer always points to â€Å"the top of the stack†. LIFO †¢ The order of PUSHs and POPs must be opposite of each other in order to retrieve information back into its original location. PUSH B PUSH D †¦ POP D POP B The PSW Register Pair †¢ The 8085 recognizes one additional register pair called the PSW (Program Status Word). This register pair is made up of the Accumulator and the Flags registers. †¢ It is possible to push the PSW onto the stack, do whatever operations are needed, then POP it off of the stack. – The result is that the contents of the Accumulator and the status of the Flags are ret urned to what they were before the operations were executed. Subroutines †¢ A subroutine is a group of instructions that will be used repeatedly in different locations of the program. – Rather than repeat the same instructions several times, they can be grouped into a subroutine that is called from the different locations. In Assembly language, a subroutine can exist anywhere in the code. – However, it is customary to place subroutines separately from the main program. Subroutines †¢ The 8085 has two instructions for dealing with subroutines. – The CALL instruction is used to redirect program execution to the subroutine. – The RTE insutruction is used to return the execution to the calling routine. The CALL Instruction †¢ CALL 4000H – Push the address of the instruction immediately following the CALL onto the stack 2000 CALL 4000 2003 counter – Load the program PC 2 0 0 3with the 16-bit address supplied with the CALL instructi on. FFFB FFFC FFFD FFFE FFFF 3 20 SP The RTE Instruction †¢ RTE – Retrieve the return address from the top of the stack – Load the program counter with the return address. 2003 PC 4014 4015 †¦ RTE FFFB FFFC FFFD FFFE FFFF 03 20 SP Cautions †¢ The CALL instruction places the return address at the two memory locations immediately before where the Stack Pointer is pointing. – You must set the SP correctly BEFORE using the CALL instruction. †¢ The RTE instruction takes the contents of the two memory locations at the top of the stack and uses these as the return address. – Do not modify the stack pointer in a subroutine. You will loose the return address.Passing Data to a Subroutine †¢ In Assembly Language data is passed to a subroutine through registers. – The data is stored in one of the registers by the calling program and the subroutine uses the value from the register. †¢ The other possibility is to use agreed upon mem ory locations. – The calling program stores the data in the memory location and the subroutine retrieves the data from the location and uses it. Call by Reference and Call by Value †¢ If the subroutine performs operations on the contents of the registers, then these modifications will be transferred back to the calling program upon returning from a subroutine. Call by reference †¢ If this is not desired, the subroutine should PUSH all the registers it needs on the stack on entry and POP them on return. – The original values are restored before execution returns to the calling program. Cautions with PUSH and POP †¢ PUSH and POP should be used in opposite order. †¢ There has to be as many POP’s as there are PUSH’s. – If not, the RET statement will pick up the wrong information from the top of the stack and the program will fail. †¢ It is not advisable to place PUSH or POP inside a loop. Conditional CALL and RTE Instructions à ¢â‚¬ ¢ The 8085 supports conditional CALL and conditional RTE instructions. The same conditions used with conditional JUMP instructions can be used. – – – – – CC, call subroutine if Carry flag is set. CNC, call subroutine if Carry flag is not set RC, return from subroutine if Carry flag is set RNC, return from subroutine if Carry flag is not set Etc. A Proper Subroutine †¢ According to Software Engineering practices, a proper subroutine: – Is only entered with a CALL and exited with an RTE – Has a single entry point †¢ Do not use a CALL statement to jump into different points of the same subroutine. – Has a single exit point †¢ There should be one return statement from any subroutine. Following these rules, there should not be any confusion with PUSH and POP usage. The Design and Operation of Memory Memory in a microprocessor system is where information (data and instructions) is kept. It can be classified into t wo main types: ? ? Main memory (RAM and ROM) Storage memory (Disks , CD ROMs, etc. ) The simple view of RAM is that it is made up of registers that are made up of flip-flops (or memory elements). ? ROM on the other hand uses diodes instead of the flip-flops to permanently hold the information. The number of flip-flops in a â€Å"memory register† determines the size of the memory word. Accessing Information in Memory For the microprocessor to access (Read or Write) information in memory (RAM or ROM), it needs to do the following: Select the right memory chip (using part of the address bus). Identify the memory location (using the rest of the address bus). Access the data (using the data bus). 2 Tri-State Buffers An important circuit element that is used extensively in memory. This buffer is a logic circuit that has three states: Logic 0, logic1, and high impedance. When this circuit is in high impedance mode it looks as if it is disconnected from the output completely.The Outp ut is Low The Output is High High Impedance 3 The Tri-State Buffer This circuit has two inputs and one output. The first input behaves like the normal input for the circuit. The second input is an â€Å"enable†. ? ? If it is set high, the output follows the proper circuit behavior. If it is set low, the output looks like a wire connected to nothing. Output Input OR Input Output Enable Enable 4 The Basic Memory Element The basic memory element is similar to a D latch. This latch has an input where the data comes in. It has an enable input and an output on which data comes out. Data Input D Data Output QEnable EN 5 The Basic Memory Element However, this is not safe. Data is always present on the input and the output is always set to the contents of the latch. To avoid this, tri-state buffers are added at the input and output of the latch. Data Input D Data Output Q RD Enable EN WR 6 The Basic Memory Element The WR signal controls the input buffer. The bar over WR means that thi s is an active low signal. So, if WR is 0 the input data reaches the latch input. If WR is 1 the input of the latch looks like a wire connected to nothing. The RD signal controls the output in a similar manner. A Memory â€Å"Register† If we take four of these latches and connect them together, we would have a 4-bit memory register I0 WR I1 I2 I3 D Q EN EN RD D Q EN D Q EN D Q EN O0 O1 O2 O3 8 A group of memory registers D0 o D1 o o D2 o D3 WR D EN Q D EN Q D EN Q D EN Q D Q D EN Q D EN Q D EN Q Expanding on this scheme to add more memory registers we get the diagram to the right. EN D EN Q D EN Q D EN Q D EN Q D EN Q D EN Q D EN Q D EN Q o o o o RD D0 D1 D2 9 D3 Externally Initiated Operations External devices can initiate (start) one of the 4 following operations: Reset ?All operations are stopped and the program counter is reset to 0000. The microprocessor’s operations are interrupted and the microprocessor executes what is called a â€Å"service routine†. Th is routine â€Å"handles† the interrupt, (perform the necessary operations). Then the microprocessor returns to its previous operations and continues. Interrupt ? ? 10 A group of Memory Registers If we represent each memory location (Register) as a block we get the following I0 I1 I2 I3 WR EN0 EN1 EN2 EN3 RD O0 Input Buffers Memory Reg. 0 Memory Reg. 1 Memory Reg. 2 Memory Reg. 3 Output Buffers O1 O2 O3 11The Design of a Memory Chip Using the RD and WR controls we can determine the direction of flow either into or out of memory. Then using the appropriate Enable input we enable an individual memory register. What we have just designed is a memory with 4 locations and each location has 4 elements (bits). This memory would be called 4 X 4 [Number of location X number of bits per location]. 12 The Enable Inputs How do we produce these enable line? Since we can never have more than one of these enables active at the same time, we can have them encoded to reduce the number of line s coming into the chip.These encoded lines are the address lines for memory. 13 The Design of a Memory Chip So, the previous diagram would now look like the following: I I I I 0 1 2 3 WR A d d r e s s D e c o d e r Input Buffers Memory Reg. 0 Memory Reg. 1 Memory Reg. 2 Memory Reg. 3 Output Buffers A1 A0 RD O0 O1 O2 O3 14 The Design of a Memory Chip Since we have tri-state buffers on both the inputs and outputs of the flip flops, we can actually use one set of pins only. Input Buffers WR A1 A0 A D The chip Memory Reg. now look likeDthis: would 0 d e 0 D0 A1 A0 D1 D2 D3 d r e s s c o d e r Memory Reg. 1 Memory Reg. 2 Memory Reg. Output Buffers D1 D2 D3 RD RD WR 15 The steps of writing into Memory What happens when the programmer issues the STA instruction? The microprocessor would turn on the WR control (WR = 0) and turn off the RD control (RD = 1). The address is applied to the address decoder which generates a single Enable signal to turn on only one of the memory registers. The da ta is then applied on the data lines and it is stored into the enabled register. 16 Dimensions of Memory Memory is usually measured by two numbers: its length and its width (Length X Width). ? ? The length is the total number of locations.The width is the number of bits in each location. The length (total number of locations) is a function of the number of address lines. # of memory locations = 2( # of address lines) 210 = 1024 locations (1K) ? So, a memory chip with 10 address lines would have Looking at it from the other side, a memory chip with 4K locations would need ? Log2 4096=12 address lines 17 The 8085 and Memory The 8085 has 16 address lines. That means it can address 216 = 64K memory locations. Then it will need 1 memory chip with 64 k locations, or 2 chips with 32 K in each, or 4 with 16 K each or 16 of the 4 K chips, etc. ow would we use these address lines to control the multiple chips? 18 Chip Select Usually, each memory chip has a CS (Chip Select) input. The chip wil l only work if an active signal is applied on that input. To allow the use of multiple chips in the make up of memory, we need to use a number of the address lines for the purpose of â€Å"chip selection†. These address lines are decoded to generate the 2n necessary CS inputs for the memory chips to be used. 19 Chip Selection Example Assume that we need to build a memory system made up of 4 of the 4 X 4 memory chips we designed earlier.We will need to use 2 inputs and a decoder to identify which chip will be used at what time. The resulting design would now look like the one on the following slide. 20 Chip Selection Example RD WR D0 D1 RD WR A0 A1 CS RD WR A0 A1 CS RD WR A0 A1 CS RD WR A0 A1 CS A0 A1 A2 A3 2 X4 Decoder 21 Memory Map and Addresses The memory map is a picture representation of the address range and shows where the different memory chips are located within the address range. 0000 0000 EPROM 3FFF 4400 Address Range of EPROM Chip Address Range RAM 1 RAM 2 RAM 3 Ad dress Range of 1st RAM Chip 5FFF 6000 Address Range of 2nd RAM Chip FFF 9000 A3FF A400 Address Range of 3rd RAM Chip RAM 4 F7FF FFFF Address Range of 4th RAM Chip 22 Address Range of a Memory Chip The address range of a particular chip is the list of all addresses that are mapped to the chip. An example for the address range and its relationship to the memory chips would be the Post Office Boxes in the post office. †¢ Each box has its unique number that is assigned sequentially. (memory locations) †¢ The boxes are grouped into groups. (memory chips) †¢ The first box in a group has the number immediately after the last box in the previous group. 23 Address Range of a Memory ChipThe above example can be modified slightly to make it closer to our discussion on memory. †¢ Let’s say that this post office has only 1000 boxes. †¢ Let’s also say that these are grouped into 10 groups of 100 boxes each. Boxes 0000 to 0099 are in group 0, boxes 0100 to 01 99 are in group 1 and so on. We can look at the box number as if it is made up of two pieces: †¢ The group number and the box’s index within the group. †¢ So, box number 436 is the 36th box in the 4th group. The upper digit of the box number identifies the group and the lower two digits identify the box within the group. 24The 8085 and Address Ranges The 8085 has 16 address lines. So, it can address a total of 64K memory locations. If we use memory chips with 1K locations each, then we will need 64 such chips. The 1K memory chip needs 10 address lines to uniquely identify the 1K locations. (log21024 = 10) That leaves 6 address lines which is the exact number needed for selecting between the 64 different chips (log264 = 6). 25 The 8085 and Address Ranges Now, we can break up the 16-bit address of the 8085 into two pieces: A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 Chip Selection Location Selection within the ChipDepending on the combination on the address lines A15 – A10 , the address range of the specified chip is determined. 26 Chip Select Example A chip that uses the combination A15 – A10 = 001000 would have addresses that range from 2000H to 23FFH. Keep in mind that the 10 address lines on the chip gives a range of 00 0000 0000 to 11 1111 1111 or 000H to 3FFH for each of the chips. The memory chip in this example would require the following circuit on its chip select input: A 10 A 11 A 12 A 13 A 14 A 15 CS 27 Chip Select Example If we change the above combination to the following: A 10 A 11 A 12 A 13 A 14 A 15 CSNow the chip would have addresses ranging from: 2400 to 27FF. Changing the combination of the address bits connected to the chip select changes the address range for the memory chip. 28 Chip Select Example To illustrate this with a picture: ? ? in the first case, the memory chip occupies the piece of the memory map identified as before. In the second case, it occupies the piece identified as after. Before Af ter 0000 2000 23FF 2400 27FF 0000 FFFF FFFF 29 High-Order vs. Low-Order Address Lines The address lines from a microprocessor can be classified into two types: High-Order ? Low-Order ?