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Chapter Profile


                  Operating system is an example of system software.  Microsoft
                  Windows is the most popular  operating  system available today. It

                  has different versions like Windows XP, Windows Vista, Windows 7,

                  Windows 8, Windows 10 and Windows 11.


                  Application Software
                  Application  software  is  used  to  perform  a  specific  task.  Some  examples  of  application
                  software are Paint, Windows Media Player and Word 2019.


                  Paint is used to draw and colour pictures.

                                                                                                                                            Exercise

                                  Windows Media Player is used to play movies and songs.
                                                                                                                                            A.  Tick ( ) the correct option.

                                                                                                                                                 1.  Which of these is NOT an input device?

                  MS Word is used to type letters, applications, articles and essays.                                                                a.  Keyboard                                   b.  Mouse

                                                                                                                                                     c.  Printer                                    d.  Scanner

                                                                                                                                                 2.  Which of the following devices is used to store data permanently?
                         HOW DOES A COMPUTER WORK?                                                                                                   a.  Microphone                                 b.  CPU


                  A computer works on the IPO cycle (Input-Process-Output).                                                                          c.  Hard disk                                  d.  Mouse
                                                                                                                                                 3.  Identify the device that converts printed pictures into digital form.
                                              INPUT               PROCESS               OUTPUT
                                                                                                                                                     a.  Scanner                                    b.  Mouse
                                               3, 6, +               3 + 6                   9
                                                                                                                                                     c.  Keyboard                                   d.  Microphone
                                                          Data               Information
                                                                                                                                                 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:
                                          Keyboard                      CPU                 Monitor
                                                                                                                                                                              Webcam, CPU, IPO, Microphone
                      Input: The data and instructions we give to a computer are called Input.

                      Process: A computer takes action on the data entered by the user. It converts the data                                     1.  A computer works on the                       cycle.
                     into  meaningful  information  with  the  help  of  the  processor  which  is  the  CPU. This                               2.  The device used to record sound into a computer is                     .
                     conversion of data into information is called processing.                                                                   3.  The CPU is placed inside the                    box/cabinet.

                      Output: The result which we get after processing the data and instructions is called                                       4.  A                    is a digital camera used to input video into a computer.
                     output.



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