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Chapter Profile

                                   Imagine, you have a magical input device that can take any object
                                   from the real world and put it into your computer. What would you

                                   put in, and what would you want the computer to do with it?



                          Recap



                       A computer works in three steps: Input         Process     Output.
                        The  devices  that  are used  to  enter  data  into  the  computer  are known  as  input
                      devices.

                        The device that works on the input is called the processing device.
                       The devices which help us to get the results are called output devices.





                 Exercise


                 A.  Tick ( ) the correct option.

                     1.  Which of the following is the brain of the computer?


                         a.                                            b.



                         c.                                            d.


                     2.  Which of the following is an input device?



                         a.                                            b.




                         c.                                            d.



                     3.  Which of the following is a processing device?



                         a.                                            b.





                         c.                                            d.







                                                                                             Working of a Computer   23
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