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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 a 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.



                     2.  Which of the following is not an output device?




                        a.                                  b.                            c.



                     3.  Which of the following is not an input device?




                        a.                                  b.                            c.



                 B.  Fill in the blanks using the words given below:



                                                   keyboard,   CPU,   Printer,   IPO


                     1.  A computer works on ........................ cycle.


                                                                                     Working of a Computer        23
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