Computer is derived from the Latin word computare which mean calculate. Computer can be defined as an electronic digital and automatic machine. takes input from the user, process it, stores it if necessary and gives output in desired form. Computer is the most powerful device the human being has ever invented. It brought enormous effects in our daily life and changes in the world. Features of Computer 1. High speed, decreasing size and cost 2. Accuracy and reliability 3. Vast storage capacity 4. Automatic 5. Electronic 6. Non – intelligent Advantages 1. Computer is faster then human 2. 100% accurate and reliable 3. Can perform various type of work 4. Very useful for repeated job. 5. Complicated things are easy to show and simulate. Disadvantages 1. Danger of electric shock and other physical Damages. 2. Failure of device and programs can produce unreliable information. 3. Increases dependency on them. 4. Simple mistake can cause loss of life and prope
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