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•  It is a single-user operating system.
        •  The user interacts with the OS in a text mode environment.
        •  It does not support a Graphical interface, so the mouse cannot be used as an input device.
        •  Basic file management functions like creating, renaming, copying, moving, deleting, etc. can be easily performed at
          “Command Prompt”.

        Windows



















        The first version of Windows launched by Microsoft in 1985 which was an extension of the Disk Operating System.
        The most important change is the support of Graphical User Interface where mouse as an input device played a very
        important role. Following are some of its important features:
        •   Initial versions supported single user at a time but now new versions support both single user and multi users at a time.
        •  It has multitasking features.
        •  It has a Graphical User Interface where the user can get its work done by a few simple mouse clicks.
        •  It provides easy access to the Internet.

        Some of the famous versions are: Windows 3.0, Windows 95, Windows NT, Windows 2000, Windows7, Windows 8.1,
        Windows 10 and the latest in the market is Windows 11.



                               Windows 95 was the second most installed system software on computers in 1995, video
                               game DOOM was first.


        Linux
        Linux is an open source operating system having UNIX like features. It was originally created by Linus Torvalds in 1991. It
        is also known as the Operating System of the future.

        Some of its important features are:


















                                                      Linux (Ubuntu)

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