What is a computer?

The term computer is derived from the word compute. A computer is an electric device that takes data and instructions as input from user , process data , and provides useful information known as output. This cycle operation of computer is known as the input-process-output cycle.
                                       
                                                  The electric device is known as " hardware"  and the set of instructions is known as  "software". The computer consists of various components that function as an integrated system to perform computational tasks . These components include the following :

• Central processing unit (CPU) :  It is the brain of the computer that is responsible for controlling and executing program instructions .
• Monitor : It is a display screen which shows information in visible form .
• Keyboard and Mouse : These are the peripheral devices used by the computer for recieving inputs from the user.

Various Components of the Computer :