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WORKING OF A COMPUTER

                 As we have discussed earlier, a computer can do a lot of things. Let us understand

                 how a computer works.

                 A computer works in three steps: Input                Process       Output (IPO). This is also
                 called the IPO cycle.


                                   Input                     Process                     Output



                 INPUT

                 We enter data and instructions into the computer which is called input. The devices
                 which are used to send input to a computer are called input devices.


                 PROCESS

                 A computer works on data (input) to produce meaningful information with the help of

                 a processing device known as the CPU (Central Processing Unit). This conversion of
                 data into information is called processing. CPU is also called the brain of a computer.


                 OUTPUT

                 The results received after processing is called output. The devices which are used to
                 display results are called output devices.











                         Input Device                     Processing Device                    Output Device



                          PARTS OF A COMPUTER


                 The computer system is made up of two parts—Hardware and

                 Software. Let’s learn about hardware and software in detail.



                          HARDWARE


                 The term ‘hardware’ refers to the parts of the computer that we can see and touch.
                 In other words, hardware is the tangible part of a computer system.



                                                                                            Hardware and Software  9
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