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    21 st
                                                                   Century   #Initiative
                                                                     Skills
                                               “We should not switch off the main
                                               power supply button without safely
                                               shutting down the computer. It may
                                               cause harm to the computer.”

                                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.

                                                                      Process
                         dirty clothes and washing powder            washing the clothes               clean clothes
                                      (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

                       22   Premium Edition-II

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