A computer system consists of mainly four basic units; namely input unit‚ storage unit‚ central processing unit and output unit. Central Processing unit further includes Arithmetic logic unit and control unit‚ as shown in the figure:. A computer performs five major operations or functions irrespective of its size and make. These are • it accepts data or instructions as input‚ • it stores data and instruction • it processes data as per the instructions‚ • it controls all operations inside a computer
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The Concept of Success The concept of success can be defined in many ways by many different types of people‚ this may depend on their values and they way in which they see or define success. 1. the favorable or prosperous termination of attempts or endeavors; the accomplishment of one ’s goals. 2. the attainment of wealth‚ position‚ honors‚ or the like. 3. a performance or achievement that is marked by success‚ as by the attainment of honors: Ref: http://dictionary.reference.com/browse/success
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the ideal answer for busy individuals with a job and a family‚ who need more education in order to advance or just keep pace professionally (Holt‚ 1999; Macht‚ 1998). What could be better than a class that meets any time you are ready and have a computer available‚ for exactly the amount of time you have‚ and builds a close relationship with your professor and classmates through collaborative discussions (Gray‚ 1998; Vetter‚ 1997)? It could be the only way in which students who live far from a
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Computers And Marketing Marketing is the process by which goods are sold and purchased. The aim of marketing is to acquire‚ retain‚ and satisfy customers. Modern marketing has evolved into a complex and diverse field. This field includes a wide variety of special functions such as advertising‚ mail-order business‚ public relations‚ retailing and merchandising‚ sales‚ market research‚ and pricing of goods. Businesses‚ and particularly the marketing aspect of businesses‚ rely a great
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keyboard-8 bit Computer systems v Manual systems Benefits of computer system: Takes up less space Searching is very quick More than one person can access the same data form their network PC. The data stays in the computers memory Fewer staff are needed to look after a computer system Reports can be generated very quickly-automated Problems of a computer system: Setting up is very expensive Computer systems need people to maintain them POWER CUTS! It is easy to hack into a computer system.
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provided by the sensor and sending the barcode’s content to the scanner’s output port. Biometrics Biometrics[1] (or biometric authentication)[note 1] refers to the identification of humans by their characteristics or traits. Biometrics is used in computer science as a form of identification and access control.[2] It is also used to identify individuals in groups that are undersurveillance.[citation needed] Biometric identifiers are the distinctive‚ measurable characteristics used to label and describe
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USER AUTHENTICATION THROUGH TYPING PATTERNS ABSTRACT The argument surrounding this research topic is that the use of keystroke rhythm is a natural choice for computer security. This argument stems from observations that similar neuro-physiological factors that make written signatures unique are also exhibited in a user ’s typing pattern. The keystroke dynamics of a computer user ’s login string provide a characteristic pattern that can be used for verification of the user ’s identity. Keystroke
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Computer Hacking The vast majority of the population of the U.S. does not consider computer hackers‚ who engage in illegal activity‚ as serious criminals. People do not consider computer hacking a serious crime because they are not directly affected. If a computer hacker taps into a network to gain wi-fi‚ no one will really care. But if a computer hacker hacks into a home network and steals credit card information to make purchases‚ then the severity of computer hacking is noticed. I believe
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HISTORY OF COMPUTER THE PRE-MECHANICAL AGE: 3000 B.C. – 1450 A.D. 1. Writing and Alphabets – Communication First development of signs corresponding to spoken sounds‚ instead of pictures‚ to express words. Around 2000 B.C.‚ Phoenicians created symbols that expressed single syllables and consonants (the first true alphabet) The Greeks later adopted the Phoenician alphabet and added vowels; the Romans gave the letters Latin names to create the alphabet we use today. 2. Paper
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What are the effects of the over-use of computer on people’s health In modern society ‚ the computer has become an indispensable tool in people’s lives and work ‚ but it also increasingly becoming a ‘double-edged sword’.When it bring people’s live and work quickly while also quietly endanger people’s health. According to the survey‚ those who over-use the computer feel tired eyes accounted for 83%‚low back pain accounted for 63.9%‚ loss of appetite and headaches accounted for 56.1% and 54.4%‚
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