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    3.  Machines that use human power to work.

                                                                Sharpener

                                        Bicycle                                              Scissors

                             COMPUTER- A MAGIC MACHINE

                     A computer is a smart machine. It helps you do many things quickly. People
                     call it a magic machine. A computer is smart, but it cannot think on its own. It

                     only works when you give it instructions.

                     TYPES OF COMPUTERS

                     Computers come in many shapes and sizes.

                     Desktop Computer

                     A desktop computer is a computer that stays in one place like a desk. It is not

                     made to move.

                                                                                    A computer can work all day
                                                                                    and night for 24 hours without
                                                                                    getting tired.

                           It is big in size.

                                                                                           Computer-A Smart Machine     11

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