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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

            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 result received after processing is called output. The devices which are used to
            display the 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 a computer that we can see and touch.

            In other words, hardware are the tangible parts of a computer system.


                                                                                       Hardware and Software  9
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