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Computer works on the Input-Process-Output cycle, also known as IPO cycle.



                                   INPUT                     PROCESS                     OUTPUT



                     INPUT


                 Input means giving instructions
                 to the computer  in the form of
                 numbers, letters or symbols.

                 Keyboard and mouse are examples
                 of input devices.                                        Keyboard                      Mouse





                     PROCESS


                 After  receiving the  input,  the  computer  performs
                 action on it with the help of the Central Processing

                 Unit (CPU). It is known as the brain of the computer.
                 It performs all the calculations.
                                                                                     CPU Box                CPU



                     OUTPUT

                 Output is the result that we get after processing. Monitor and printer are examples
                 of output devices.














                                            Monitor                               Printer
                                                                                                     Life Skills & Values





                                        Do not write anything on the
                                             monitor with a pencil.
                        COMP

                      CAUTION



                                                                                          Working of a Computer   19
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