Computer is one of the wonders of modern science.It is a fairly recent invention. It has now become an essential part of modern life. It has made our way of life easy and comfortable.We can not do anything today without a computer.

Digital computers are of four types : micro computers, main computers, main frame computers and super computers.

Computers are made in different forms also. It is not only a monitor and CPU. Embedded system such as ones in the washing machines or air - conditionars are also computers designed to do a single specific task rapidly.

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Computers used :

Banks.

Insurance companies.

educational institutions.

telecommunications.

navigation of ships and aircraft.

madical diagnosisband printing.

Conputer made our life easier and enjoyable. It has brought for mankind such comforts as a man can never dream of even in a fairy land.

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