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                       An Operating system is a software which works as a communicator between
                       you and the computer system.

                      When we switch on our computer system, the first screen that appears is
                       called Unity Desktop.

                      The horizontal line on the top of the desktop is called the Menu bar.

                      The image or wallpaper that you see at the background of the desktop is
                       called desktop background.

                      The small pictures with names are called the Icons.

                      A vertical side bar in the left side of the desktop is called Launcher.
                      You can change the desktop background according to your choice.

                      Ubuntu is an icon that lets you see everything that is stored in your computer.

                      You can change the position of the Launcher and place it at any one of the
                       four sides of the screen.

                      Once you finish your work it is always a good practice to switch off your
                       computer system.







                                                         Checkpoint





                 A.  Tick ( ) the correct option.
                      1.    In which year was Linux developed?

                            a.  1990                        b.  1991                         c.  1995

                      2.    You can change the position of the ......................... .


                            a.  Launcher                    b.  Log Out                      c.  Status Menu
                      3.    On the desktop, the small pictures with name are called ......................... .


                            a.  Icons                       b.  Background                   c.  Pictures
                      4.    Which mouse pointer shape is used for pointing and selecting?


                            a.  Busy                        b.  Normal                       c.  I Beam





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