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1                                Computer—An






                                                         Electronic Device








                          Chapter Profile

                             Working of Machines                        Working of a Computer
                            Advantages of a Computer                    Teaching & Learning using Computers
                            Disadvantages of a Computer                  Computer vs Human




                 In the previous class, we have learnt that a computer can perform a variety of tasks. It
                 works according to the commands or instructions given by us. Most of the machines
                 that we use in our daily life also work according to the commands given by us.

                      WORKING OF MACHINES


                 Look how these machines work.
                 Washing Machine:

                             Input                            Process                            Output











                        Dirty clothes                        Washing                         Clean clothes


                 Juicer:


                             Input                            Process                            Output











                         Fresh fruits                          Mixer                           Fresh juice


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