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                                                 Computer—A Wonderful



                                                                      Machine





                          Chapter Profile

                              Natural and Human-made Things                 What are Machines?
                              Computer—A Machine
                             Difference between Computers and Machines
                             Features of a Computer                         Types of Computers

                             Cell Referencing in Formulas and Its Types


                 Hello children! Look at the picture.




































                 Do you know what is this?

                 This is a Computer. It is a machine.








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