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Since this the era of technology where computer plays a vital role. Now computer becomes most essential part of everyone's life. In USA and UK, you will find PC in every ones house. But in India it is still to touch everyone. But the scenario is gradually changes and people of a village also starts using computers for their different works. But very few of them know the definition of computer.

Definition of Computer

So the computer is a digital electronics device which can accepts data through its input devices like keyboard and mouse and process that data internally without human intervention and produce results through its output device like monitor and printer. In definition of computer we have got few new terms like input device and output device. 

What is input device ?

Input devices are those through which the process of entering data and programs in to the computer system. 
     e.g. Keyboard, mouse, scanner, joystick etc.

What is output device ?

Output devices are those through which the results are displayed after processing entered data through input. This is the process of producing results from the data for getting useful information. The output is also stored inside the computer for further proc­essing.
     e.g. monitor, printer, plotter etc.