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                        Restart


                        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.
                       Home icon 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                                       d.  1992


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