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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.




                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.

                2.  ........................ is an Input device.


                3.  ........................ is an example of Output device.

                4.  ........................ is a Processing device.




                                                                                Working of a Computer        21
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