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    COMPUTER

                      In the previous class, you have learnt that machines make our work easy and
                      efficient.

                      A computer is a smart machine that helps us do many things, like watching

                      movies, listening to music, playing games, drawing pictures, writing letters,
                      solving  sums,  etc.  It works on  electricity.  Hence,  a  computer  is  called  an

                      electronic machine. In this chapter, we are going to explore how computers
                      are different from humans.

                                COMPUTERS AND HUMANS

                      Computers have become an important part of our lives but they are very
                      different from us. Let us see how.

                                                                                  Humans cannot work as fast
                                   Computers work fast.                                    as computers.

                           Computers cannot make mistakes.                         Humans can make mistakes.

                              Computers cannot get tired                       Humans can get tired and bored.
                                         or bored.

                                                                                   Humans can work without
                           Computers need instructions to work.                            instructions.

                           Computers cannot take decisions                         Humans can take decisions
                                       on their own.                                       on their own.

                              Computers store everything in                      Humans can forget information
                              the memory and never forget.                             stored in their brain.

                                                                               Humans do not need electricity
                             Computers work on electricity.
                                                                                            to work.

                       8    Computer Science-II

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