Power Supply In Desktop Computer Engineering Essay

Power Supply In Desktop Computer Engineering Essay Power supplies are used for making computer system weather it is desktop or tower to it is laptop it is must used. Here only desktop based computers power supplies are mentioned. A poor power supply can reduce the life time of a computer system. On the other hand a high quality Power supply can help to reduce the noise or heat generated within a computer system. So we should use good quality power supply but how we can come to know that this is good and this is bad power supply here are some of the points which make power supply good. Now a days power supplies generally work on almost +12V with at least 18A. This can also very for the good performance if the components are also increased. This paper discusses the comparison of old and current power supplies and also about the different types of power supplies that exist in these days. And discuss the specifications, prices and show the diagrams of them. Circuit of todays power supply Power supply mostly consist of transformer, capacitor, rectifier, cables, and connectors etc. the transfer is step down that is sued to covert the 220 voltage into required less voltage and rectifier is sued for the signals and capacitor issued to achieve at max 5 voltage continuously. This is all about the inside working of desktop power supply. There are many other things as well but the most important behavior is all of the discuss above. The internal working of the circuit in accordance to the signal is shown below. Internal working of power supply Schmatic of Todays Power Supply Circuit of old power supply In old power supplies the circuit was almost same and working as also the same but the difference was on the performance of individual components like the transformer do not provide their 100% correct work and we have to use other means of source for that and rectifier was not in the condition to handle the waves as it should be. The above diagram is of one of the old power supply and we can imagine the difference between old and new one by seeing just the internal structure of both the old and new (as above) power supply. First the circuit was complex and now days we have reduce that too. Disadvantage in old days power supply In past the power supplies used in desktop based computer had any issues. Some of them are listed here Noise Cost Power Efficiency Meant time between failures Circuit Size Compatibility Issue Noise: The old power supply had major problem of noise in that. These power supplies were not able to minimize the noise. Cost: These power supplies were also very costly because the circuit in these days were not common so buyer ahs to pay a lot for that. Power Efficiency: It was very poor in power efficiency as compared to now days. The difference was also due to the structure of the mother board as well but it also affects the efficiency of desktop based computers. Compatibility Issue: This can be called as father of all issues as old power supplies has the compatibility issue because if someones power supply break down mean get damage then it was very hard to find the power supply for the same kind of desktop base computer. And the internal structure was so complex that no one can repair else the manufacturer of that. So user has to face many problems due to this. Advantages of current power supply In todays power supplies we have gained a lot of benefits from the power supply which are Low or no Noise Meant time between failures Power Efficiency Low Noise The todays power supplies have reduced the problem of noise as well. To avoid lot of noise then there are a number of options available. The first option is that use larger fans that move more air through the power supplies and from the system as well at slower speed so we do not feel any kind of noise. Another option is that use silent power supplies that has no link with fans and it does not generate any kind of noise. Mean time between Failures For the current power supplies manufacturer have also increase the mean time of usage. And we can use them for large period of time. Because higher the meant time between failure, higher the quality of the power supply we use. Power Efficacy Modern power supplies have also gained the advantage by increasing the power efficiency of computer. As we know that power supplies convert voltages from wall outlets to lower levels in the desktop computer. During this conversion, some power is lost as heat. And the efficiency of desktop computer is determined by how much lower extra power must be put into the power supply to use the computer. And in todays supplies we have to put very low extra power to overcome the heat issue hence in advantage we have gained greater power efficiency.

Is Scott Electronics plcs current human resources strategy effective Essay

To what extent do you think that Scott Electronics plc’s current human resources strategy is effective? (18) Human resource strategy is how a business sees its employees from different business point of view and they are seen as resources to complete the business objectives. Firstly the human resource strategy for Scott electronics is very effective because the firm’s labour productivity is very high with 105 compared to the industry average which is 100. This is very effective as it shows the level of recruitment and the staff the business is recruiting is doing very well which has a positive effect in the recruitment section therefore this will make the company recruit more staff which will increase the productivity of the business. Also the bonuses which is 40% and its 20% higher than the industry average, this shows that the bonuses are keeping the firms employees motivated and it drives them to work harder which mean there will be a increase in productivity and if productivity increases it will have a positive effect on the sales revenue as the company will sell more items which will increase the sales revue and profit. Also another reason why the human resource strategy for Scott electronics is very effective because it has a very unique centralised organisational structure. A centralised structure is where the entire decision making is done from the top of the hierarchy. This is an effective strategy because the entire decision making can be done from the main person who is in charge and it can be done very quickly without going through any difficulties. This is very effective because staff can work through the business objective rather than stressing on the extra responsibility they have on their shoulders which will make them stress free and become more productive. Also they can be told what to do and the managers will have control over their workforce so that employees are less likely to make mistakes or make wrong decisions which will make a negative impact the on the businesses performance. However the human resource strategy for Scott electronics is not that effective because high numbers of employees are on temporary contract which is 75% compared to the industry average which is 25%. This is bad for the business because it will make employees feel that the job security is not there and they are not guaranteed the job which the business can tell the employees that they are not in need and the employees will go away, therefore this might result in the employees not very motivated to do well and they might not think as if they are involved with the business. Also employees on temporary contract are more likely to leave the business as the labour turnover rate is at 10% which is higher than the industry average which is 6%. This is human resource strategy is ineffective because it lead to employees leaving the business every year and the business is losing experienced and valuable staff. Also another reason the human resource strategy for Scott electronics is not that effective because the training budget is below the industry average as Scott electronics training cost is  £500 compared to the industries average which is  £1000. This shows that the staff are not that well trained and most of the staff don’t know what they are doing sometimes or they might not know how the company operates as high level of training was not provided. This lead to the amount of defect products increased as the staffs were not well trained and they kept making mistakes therefore the numbers of defects products increased. This is one of my strongest reasons because staffs need to be well trained before they can start the job as they will know what they are doing and how they are going to carry out each task according the company structures of dealing with things. Therefore the staff need to be well trained and the business needs to increase its amount on training the staff which will allow the business to have staff that know what they are doing and make less mistakes as this will cause the staff to make less defect products. In conclusion I think that the human resources strategy is very effect to the business because average span of control for Scott’s electronic is 5 and industry average is 8. This has a greater advantage to the specific business because it will allow the business mangers to control their staff and monitor the progress which the manager can set targets and the targets can be analysed to see if they have reached the targets this will increase the productivity of the business as targets are reached and mangers have better control over their staff and the business. However I think that the current human resource strategy is not that effective to the business because the firm’s defected products are 10% and the industry average is 5% which is doubled the amount. Therefore you can tell that the strategy is not that effective as the staffs are making a lot of mistakes which will cost the business as the raw materials cost money to buy. Also this indicates that strategy is failing as staff are not well trained or may not experienced enough to work in the field which the bale goes the firms recruitment policy as the firm could have employed experienced staff which could have reduced the level of defected products.

9/11 Conspiracy Theories Essay - 1164 Words

Introduction On September 11, 2001 the World Trade Center buildings one and two were attacked. However, who we were attacked by and even if we were attacked is a hard decision to make. There have been many different claims about how everything on that fateful day happened. There are facts that we know are true, though; Flight 11 flew into the North Tower at eight forty- six in the morning. Soon after, Flight 175 attacked the South Tower. By the end of the day, both towers had collapsed and other hijacked flights had caused damage. The amount of lives lost on September 11 was substantial; 2,749 people from eighty-three different countries died from the attacks (Facts about the attacks†¦, n.d.). All in all, America was changed forever.†¦show more content†¦The news, even though it may be broadcasting the real facts, may show videos or just talk about the subject so much that viewers are more scared than they need to be. They essentially â€Å"overdo† it, and leave Americans and others with different ideas in their minds than they need to have. This idea of sensationalism is a big problem with the situation on 9-11, and is used in it and other conspiracies to convince people of ridiculous notions. Both Sides Those who believe the WTC was destroyed by controlled demolitions argue the debris that blew out of windows was the result of an explosive. But experts disagree by saying the debris was simply the contents of the offices inside being blown out with air as the floors collapsed on top of each other. Also, demolition professionals say explosives are placed on lower levels, whereas, the planes hit the buildings at very high floors. No signs of a bomb were found in the wreckage of the buildings (Debunking the 9/11 myths, n.d.). Those who believe the planes that hit the WTC were remote controlled say there is no way al Qaeda could have even come up with the plan to hijack and crash the planes, much less have acted it out within an hour. The manufacturer stated the planes that hit the buildings had only one system of control: from the flight deck. Many telephone calls were made from passengers on the planes saying they were being hijacked.Show MoreRelatedThe Conspiracy Theories O f 9 / 11 Essay1409 Words   |  6 PagesSeptember 11, 2001, 19 people hijacked four airliners and carried out suicide attacks against their targets.. Two of the planes crashed into the towers of the World Trade Center in New York City, the third plane hit the Pentagon just outside Washington, D.C., and the fourth crashed in a field in Pennsylvania. Over 3,000 people were killed during the attacks in New York City and Washington, D.C., including more than 400 police officers and firefighters. (â€Å"9/11 attacks†2010). 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The fourth airplane suspected target was the White House, but it was diverted by the brave men and women aboard that hijacked airplane, and crashed the airline jet before it could reach its target. It was likeRead MoreQuestions On The World Trade Center Terror Attacks1538 Words   |  7 Pages Conspiracy Theory Inquiry Proposal Name: Kyle Dahya Form: 12DB Conspiracy Event: 9/11 US World Trade Centre Terror Attacks Possible focusing questions which will guide my inquiry are: 1. What is the official story that surrounds the events on the day of the 9/11 attacks? 2. What are some of the main conspiracy theories that revolve around 9/11? 3. Which of the accounts seem to the most plausible and why is that account more plausible than the other? 4. What significanceRead MoreHow Social Factors Can Contribute Conspiracy Theories? 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For the purposes of this paper, it is more beneficial to use Sustein and Vermeule’s definition which states that an idea can be considered a conspiracy theory if it is, â€Å"an effort to explain some event or practice byRead MoreHistorical Scholarship On Conspiracy On American Culture1254 Words   |  6 Pagesreason or irrationality that empowers reason with its undeniable coercive force.† Hence, the book does not go hand in hand with other cultural conspiracy historians; despite the similarity of research result the perception applied var ies. The last book on cultural conspiracy to be examined exemplifies newer trend in the historical scholarship on conspiracy on American culture since sixteenth century up to nineteen century. John Farrell’s Paranoia and Modernity study bases on works of historians

Essay on Voice, Words and Sound in Heart of Darkness

Voice, Words and Sound in Heart of Darkness To Marlow, voice is the supreme symbol of civilization, and civilized understanding is expressed through words. The absence of words, or the inability to express something in words, signals meaninglessness. The psychedelic experience brings one into direct confrontation with the breakdown of language (the ‘transcendence of verbal concepts’ cited in the introduction), its inability to express the hidden truth of existence. Marlow becomes aware of this—primarily through his direct experience with Kurtz—yet he does not fully allow himself to believe in the failure of language. After all, language is still the most effective tool he has for communication. Sound is a signifier of†¦show more content†¦Then is the silence of fear, which changes to wails of threatened humanity. The white man conquers: the voices of the black men are silenced, and the sound left in the air is of technology. The defeat of the Africans is expressed in silence. Sound and voice define power. The silence of the forest is terrifying because sound is unnecessary to prove the forest’s power and its silence consumes the sounds of man. This is the first destabilization of sound for Marlow, the second occurring with Kurtz. First, Marlow discovers the power in silence, and then, he discovers the powerlessness of language. Kurtz is the personification of language—a voice. The voice speaks in English and it is this language that marks Kurtz as the supreme representative of European civilization. Marlow describes Kurtz as a man made by Europe, and his words express all that is positive and moral about European man. Marlow discovers that words are what allow the pretence of surface-reality and are not to be trusted because they don’t always represent fact. Kurtz’s words do not express the factual reality of his actions in the Congo. Only on the brink of death does he find the words that are not hollow, not pretence, the words that express the truth of his life. ‘The horror! The horror!’ has been interpreted differently by many critics. I would argue that the only way to interpret these words that is meaningful to the novellaShow MoreRelatedHavisham Essay935 Words   |  4 Pagesa shocking short sentence, which contains contrasting word choice to convey an ironic tone from Havisham. The contradictory oxymoron also startles the reader and grasps our attention as we do not expect this beginning. ‘Beloved sweetheart bastard.’ This contrasting word choice grasps the reader as it suggests a menacing narrative voice. The plosive ‘b’ sound repeated throughout the sentence creates a sinister mood as it is aggressive and sounds explosive and angry. This also suggests that she is writingRead MoreHeart of Darkness Lit. 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