The world is moving fast with the advertisement of science and technology.Computer is a wonder of modern science and technology.Charles Babbage,Professor of Mathematics,thought of this computer in the 1830.But Professor Howard Aiken invented the first mechanical computer in 1944.After that electronic computer were invented.Now computer is changing almost everyday.
There are two kinds of computer.These are mode based and Mathematical based.The mode based are analogue computer.In the past it was used for single purpose.The next generation of computers is mathematically based.Beside there are Digital computer,Hybrid computer and super computer.
The components of computer are CPU,Key-board and mouse,monitor,printer or output device.The three parts of CPU or Central processing Unit are memory,arithmetic logic and controlling unit.The key-board resembles the traditional key-board or type-writer.There are other function keys F1 to f12 and numeric akin to a calculator key-pad.
The computer has revolutionized printing,banking and other industrial work.One can put ten years of file which can fill 20 cabinets in a small disk.
It can compose books,newspaper and reports in a great speed.It can play chess and even can play on musical instruments.Nowadays,traffic is also controlled with the help of computers.Bangladesh has stepped into the era of computers.She has entered into Internet.The world of information has come to our homes.We all should learn how to operate computer as the modern world is the age of computer.
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