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INPUT                     PROCESS                      OUTPUT

                                     3, 6, +        Data           3 + 6     Information        9
                                                Instructions













                                     Keyboard                                   CPU               Monitor



                          Let’s CatCh uP

                     Suppose you have to talk to your friend, and you dial her number. Write Input,
                     Process and Output under the pictures given below as steps to talk to her.




















                        Connecting to network          Dialing number of your           Talking to your friend
                                                                 friend








                         COMPUTER SOFTWARE


                  A computer is an electronic machine. It cannot work by itself. A computer needs instructions
                  to do anything. These step-wise instructions are called software.

                  Software works like a manager between computer hardware and humans. So, we can say
                  that the part of a computer that we cannot see and touch is known as software.

                  For example, you play a movie on the computer from a pen drive. You can touch the pen
                  drive but you cannot touch the movie. This movie is the software and the pen drive is the
                  hardware which stores the movie and keeps it safe.



                  12    Plus (Ver. 2.2)-III
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