Computer is an electronic device that stores, retrieves, and processes data, and can be programmed with instructions. A computer is composed of hardware and software, and can exist in a variety of sizes and configurations.
Computer Applications
To begin with, you must understand the impact of computers in the world today. Computers are affecting our lives in one way and the other. Airline and Railway reservations, telephone and electricity bills, banking, medical diagnose, weather forecasts... the list of services using computers is almost endless.
You would probably noticed that some applications of computers have made life much easier for you - your air ticket is now issued in a matter of minutes and your credit card is processed very fast.
You may be surprised to know that the computer cannot perform any task without you. The computer needs to be instructed on exactly what it has to do.
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