THE COMPUTER

As the name implies the word" Computer" comes from the term to compute, meaning to calculate. It is one word which is used frequently theses days, and it is common knowledge that the widespread use of computers is having a tremendous effect on all aspects of human life, both from individual and social point of view.

The computer's storage capacity, or memory, does not yet equal that of human brain, but computer capacity is rapidly increasing. In the future, it will undoubtedly exceed that of the human memory.

In General, A computer is an electronic system designed to manipulate data. They are machines for storing, moving, adding, and subtracting, and evaluation data. All Computers have four basic functions in common: input, processing, storage, and output. This is a true of all computers, from the largest general purpose main frame to the smallest personal computer.

Since computer are, after all, only machines, they have no initiative and cannot do any useful work until they have been properly prepared. This is done by providing them with sequences of instructions called a Program. These instructions control the manner in which the computer carries out its operational functions. Again a computer will perform only what it is told to do; it does not have the ability to evaluate information and take appropriate action on its own.