History of Computer Introduction Man’s progress is measured by sophistication of his tools. First‚ he discovered how to control fire. Eventually‚ he invented the wheel. He built boats and earned to harness the wind. As soon as commerce developed in the early societies‚ people recognized the need to calculate and keep track of information. They soon devised simple computing devices and bookkeeping systems to enable them to add‚ subtract‚ and simple record transactions. Today‚ we are witnessing
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deny that the rapid development of our country had improved our education system. It seems that more and more often computers and technology are being used in an educational setting. This trend of online learning‚ using long distance learning‚ and reliance on the internet for educational information is seemingly being pushed forward to enhance the learning abilities among the students. It makes the learning and teacher environment more comfortable for the teachers and students as the transfer of knowledge
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Introduction Business environment is an element that will affect all the activities of an organization. Besides‚ it will bring firms both opportunities and threats because of its uncertainties. Business environment is uncertain‚ complex & dynamics; organization should apply more flexibility & discontinuity ways to manage them. A firm cannot control the environment because it is unpredictable in its direction and speed of change‚ such as interest rates‚ rate of inflation and exchange rate. Business
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tennis. Economic Factors Economics has been defined as ’I’ll scratch your back if you scratch mine.’ To my learned ear that sounds like two people with itchy backs. We will study the Custard-Not-Mustard model‚ a complex but ultimately rewarding system. Annual Military Budget nature When displayed this way it becomes very clear that nature is of great importance. Seemingly the annual military budget‚ ultimately decided by politicians‚ will always be heavily influenced by nature due
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Computer fraud is the use of information technology to commit fraud. In the United States‚ computer fraud is specifically proscribed by the Computer Fraud and Abuse Act‚ which provides for jail time and fines. 1. Unauthorized access at North Bay Abdulswamad Nino Macapayad‚ a former accounts payable clerk for North Bay Health Care Group‚ admitted to using her computer to access North Bay’s accounting software without authorization‚ and in turn issued various checks payable to herself and others.
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PARTS OF THE COMPUTER All computer systems need two types of parts that work together to make them run. These parts are: 1. Hardware - The hardware is the part of the computer you can touch and see. Eg: Keyboard‚ Mouse‚ Hard disk etc. 2. Software - The software is a part of the computer you cannot touch but is very important. The software is all the programming that makes the computer run; controlling everything that the computer does. Common
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Supercomputer Supercomputer is a broad term for one of the fastest computers currently available. Supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations (number crunching). For example‚ weather forecasting requires a supercomputer. Other uses of supercomputers scientific simulations‚ (animated) graphics‚ fluid dynamic calculations‚ nuclear energy research‚ electronic design‚ and analysis of geological data (e.g.
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COMP212 Computer Organization and Systems Tutorial/Lab #4 Problems about Cache Memory 4.2 A two-way set associative cache has lines of 16 bytes and a total size of 8 bytes. The 64-Mbyte main memory is byte-addressable. Show the format of main memory address. Kb => 1‚024 Mb => 1024 * 1024 Ans. A two-way set => 2 lines / set in the cache; The cache has lines of 16 bytes and a total size of 8K bytes => There are a total of 8K bytes/16 bytes = 512 lines (23*210/24) in the cache;
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Computer Fundamentals Computer is an electronic device that manipulates data according to set of instructions and produce a meaningful result. • Computers are not very intelligent devices‚ but they handle instructions flawlessly and fast. • They must follow explicit directions from both user and computer programmer. • Computers are really nothing more than a very powerful calculator with some great accessories. • Applications like word processing and games are just a very
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Computer keyboard In computing‚ a keyboard is a typewriter-style device‚ which uses an arrangement of buttons or keys‚ to act as mechanical levers or electronic switches. Following the decline of punch cards and paper tape‚ interaction via teleprinter-style keyboards became the main input device for computers. A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However‚ to produce some symbols requires pressing
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