Computer is the greatest of the discoveries of modern science. We cannot now think of a moment without computer. It cannot work itself but can work on the basis of the commands given by the operator.
Charles Babes is called the father of modern Computer. He invented the structure of Computer at first in 1833. By following the structure of Babes, Harvard University and I.B.M company calmingly invented the modern Computer in 1944.
A Computer has/consists of five major components. They are the input unit, the output unit, the memory unit, the control unit and the arithmetic unit.
A Computer performs three functions : (1) It receives data, (2) It processes data and (3) It emits data.
Computer contributes a lot in the field of education. The students of developed countries prepare their study materials and many things by using a computer. Printing thousands of books in a very short time has become possible for it.
Computer is now being used to diagnose disease. It has invented a new process of operation as an alternative of surgery. It is also used to grind stones in normal pathological treatment. Computer is the most common media of worldwide communication. By using different functions, it is possible to communicate all over the world in a short time
At present, business, commerce and trade cannot be thought of without computer. It is widely used to prepare document, budget and to store information. In banking section, it is almost essential. It is also used to run mills, factories and industries in the developed countries.
In spite of having so many advantages of computer, it has also some disadvantages. It weakens the eye-sight of the operator.
Computer has made a rapid change in different fields of Bangladesh. For a Digital Bangladesh, every literate person should have a basic knowledge on it.
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