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    1.

                          Pizza base and toppings                   Baking                         Hot pizza
                                    (Input)                        (Process)                        (Output)

                     2.

                                  Debit Card                    ATM Machine                           Cash
                                    (Input)                      (Processing)                       (Output)

                     IPO Devices

                                                                                  Just as bees collect nectar to
                     A computer  is  made  up  of  many  parts.
                                                                                 make honey, computers gather
                     These parts are also known as devices.                        information to help us solve
                     Input Devices                                               problems and learn new things.

                     The devices that are used to enter data
                     into  the  computer  and  give orders  are

                     called input devices. Some of the commonly used input devices are keyboard
                     and mouse.

                                                 Keyboard               Mouse

                                                                                         Working of a Computer     9

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