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WORKING OF A COMPUTER


                  Let us understand the working of a computer by following example.

                              Input                            Process                            Output

                             2, 3, +                            2 + 3                                 5

                           Numbers,
                                                              Addition                            Result
                           Instruction

                  Computers work on the Input-Process-Output cycle, also known as the IPO cycle.


                                    INPUT                     PROCESS                      OUTPUT


                  You have seen that a computer works on the principle of Input, Process and Output.
                  Let us learn more about these in detail.

                  Input

                  Input  is giving instructions to  the  computer  in the  form  of  numbers,  letters  or
                  symbols. We give input to a computer through input devices. 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.

                  Output                                                             CPU/Cabinet box           CPU

                  Output is the result that we get after processing.
                  We get output on output devices. Monitor and

                  printer are examples of output devices.
                  Now, we know that a computer is an electronic
                  machine  that  takes  the  input,  processes  the
                  input and gives us the output.

                                                                                    Monitor               Printer



                  8      iPRIME (Ver. 2.2)–II
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