2 Fundamentals of Computer Systems You need to be able to: (a) define a computer system (b) describe the importance of computer systems in the modern world (c) explain the need for reliability in computer systems (d) explain the need for adherence to suitable professional standards in the development‚ use and maintenance of computer systems (e) explain the importance of ethical‚ environmental and legal considerations when creating computer systems. What is a computer system? At its very basic
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CHAPTER ONE COMPUTER SYSTEM FUNDAMENTALS 1.1 Computer System as a Universal Tool A computer system is an electronic device that accepts inputs; transform the input through some processes to obtain output or information that can aid effective decision making. Information originated from raw data which by its own simple definition is any raw fact or figure that can be subjected to a form of manipulation before it can be trusted for decision making. Data can originate from various sources depending
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Super Computer The fastest type of computer. Supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations. For example‚ weather forecasting requires a supercomputer. Other uses of supercomputers include animated graphics‚ fluid dynamic calculations‚ nuclear energy research‚ and petroleum exploration. The chief difference between a supercomputer and a mainframe is that a supercomputer channels all its power into executing a
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CONTRIBUTION OF ICT IN RURAL SECTOR: Various initiatives in the recent past portrayed the significant role that the I.C.T plays in the realm of rural development. Several projects have reduced the costs‚ and it also has increased transparency. A large number of rural e-Governance applications‚ developed as pilot projects were aimed at offering easy access to citizen services and improved processing of government to citizen transactions. This paper presents a brief review of the innovative
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devices which possess the ability to conduct current unidirectionally. Diodes are highly versatile and find numerous applications in various disciplines. Some of the noteworthy applications of Diodes include 1. Rectification 2. Wave Shaping 3. Frequency Multiplier Circuits 4. Voltage Multiplier Circuits 5. Signal Mixers 6. Switches 7. Tuning Let us examine each of these applications with some considerable detail. RECTIFICATION: The process of converting AC into DC is called rectification
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Computers‚ what a wonderful thing! Technology is one of the greatest inventions ever made! I can honestly say computers are the best technological inventions of the last 100 years. Computers can do things people can’t even think of. For example‚ most car factories build cars with computerized robots. You can webcam‚ make songs‚ beats‚ search the internet and pictures. To begin with‚ I can honestly say computers will always be the best invention made. With today’s society‚ computers come in handy
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Applications of Silicon Silicon is one of man’s most useful elements. In the form of sand and clay it is used to make concrete and brick; it is a useful refractory material for high-temperature work‚ and in the form of silicates it is used in making enamels‚ pottery‚ etc. Silica‚ as sand‚ is a principal ingredient of glass‚ one of the most inexpensive of materials with excellent mechanical‚ optical‚ thermal and electrical properties. Hyperpure silicon can be doped with boron‚ gallium‚ phosphorus
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Task 1: Identification of the peripherals of a computer. To prepare a report containing the block diagram of the CPU along with the configuration of each Peripheral and its functions. AIM: To identify the peripherals of a computer. 1. The Mother Board [pic] 2. CPU (Processor) [pic] 3. SMPS (Switched mode Power Supply) [pic] 4. Cabinet [pic] 5. CPU heat Sink and fan [pic] 6. RAM (Random Access Memory) [pic]
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Computer Packages 11 Graphic Packages: It is important to recall that the early graphics software performed creditably on production of simple bar graphs and funny little people made of squares. However‚ the modern day graphics software and hardware is so advanced such that it is sometimes difficult to tell if computer or trick photograph produced a picture. Computer graphics as often seen in advertisement‚ Logos‚ and sports broadcast on televisions are products of computer graphic applications
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Computer Security Many commercial software packages are designed with computer security features that control who can access the computer. These types of access controls use a process called identification and authentication. Identification verifies that the user is a valid user‚ and authentication verifies that the user is who he or she claims to be. Three common methods of authentication are remembered information‚ possessed objects‚ and biometric devices. With remembered information‚ a
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