Page 13 - Modular_v4.0
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Chapter Profile
                          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 activities 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 these is NOT an input device?

                         a.  Keyboard                                   b.  Mouse

                         c.  Printer                                    d.  Scanner

                     2.  Which of the following devices is used to store data permanently?
                         a.  Microphone                                 b.  CPU

                         c.  Hard disk                                  d.  Mouse

                     3.  Identify the device that converts printed pictures into digital form.

                         a.  Scanner                                    b.  Mouse

                         c.  Keyboard                                   d.  Microphone

                     4.  The full form of CPU is                   .

                         a.  Central Processing Unit                    b.  Central Programming Unit

                         c.  Computer Processing Unit                   d.  Central Printing Unit


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

                                                   Webcam, CPU, IPO, Microphone


                     1.  A computer works on the                       cycle.
                     2.  The device used to record sound into a computer is                      .

                     3.  The CPU is placed inside the                     box/cabinet.
                     4.  A                    is a digital camera used to input video into a computer.





                                                                                                 A Computer System   11
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