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    HOW A COMPUTER WORKS?

                     You know that a computer cannot function on its own. It needs instructions to
                     work. Let us observe how the IPO cycle works in daily life.

                     WASHING CLOTHES IN A WASHING MACHINE

                     In  this example, dirty clothes and washing powder are the inputs. We are
                     washing the clothes as a set of processes. So, washing clothes is the process.

                     We get clean clothes as the output.

                        dirty clothes and washing powder            washing the clothes              clean clothes
                                                                     Process
                                     (Input)                             (Process)                      (Output)

                     CALCULATING NUMBERS

                     If we are asked to add the numbers 10 and 5.

                                                     10           5          +      =    ?

                     To add these numbers, we will use our brain to think and calculate.

                                    10,5,+                          10 + 5                             15

                                     Input                         Process                          Output

                                                                                    Just as ants build a colony
                     After calculating, we’ll find that the answer                 together, computers gather
                     is 15. Similarly, we give instructions to the                 information to help us solve
                     computer, and then the computer works                           problems and learn new

                     on the instructions and gives us the result.                               things.

                                                                                                 Operating a Computer  23

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