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Recap


                        A computer accepts data and instructions through input devices.

                        A computer converts the input into meaningful information through the processing
                       device.
                        A computer displays the results of the processed data through the output devices.
                         System software controls and manages the overall activity of a computer system.

                        Application software is used to perform a specific task.
                         A computer works on the IPO (Input-Process-Output) cycle.






                                                        Exercise



                 A.  Tick () the correct option.

                     1.  Which of the following is an example of system software?

                        a. Paint                       b. MS Word                    c. Windows 7


                     2.  The working of a computer is based on the ............................ cycle.

                        a. IPU                         b. IPO                        c. IOP

                     3.   A ............................ displays the output from the computer screen to a larger screen.


                        a. Projector                   b. Speakers                   c. Printer

                     4.  Which of the following is an input device?

                        a. Scanner                     b. Printer                    c. Pen drive

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



                                               CPU, Microphone, Input devices, Monitor


                     1.  .................................... is used to record voice and music in a computer system.


                     2.  .................................... is known as the brain of the computer.

                     3.  .................................... shows us the result after processing.

                     4.  A computer accepts data and instructions from you through ................................... .







                                                                                             A Computer System    11
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