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    Operating System

                      An operating system is the most important software that runs on a computer. It

                      manages the computer’s memory, processes data and controls all its software as well
                      as hardware. It serves as an interface between the user and the hardware. Without an

                      operating system, a computer is useless.
                      Types of operating systems: Operating systems usually come preloaded on any

                      computer you buy. Most people use the operating system that comes with their
                      computer, but it is possible to upgrade or even change the preloaded operating

                      system.
                      The  most common operating  systems  for  personal  computers  are  Microsoft

                      Windows, Mac OS, Edubuntu and Linux. Other known names are iMac, UNIX and
                      DOS.

                      Functions of an Operating System

                      An operating system performs three types of functions:

                          Manages computer resources
                            Coordinates memory and processing storage

                            Controls all the computer resources.                   Clickipedia
                            Monitors systems performance
                            Provides security                                       Booting is a process that loads

                            Starts-up the computer                                  the operating system and
                          Provides user interface                                   prepares the system for use.

                            The interface can be Character User
                            Interface (CUI) or Graphical User Interface (GUI)

                          Runs applications through
                            Multitasking

                            Foreground and background applications
                      Language Translator

                      A  language  translator  helps the  computer  understand  and  convert  instructions

                      from programming languages into machine language, which the computer can
                      run. Examples of language translators include compilers, assemblers, debuggers
                      and interpreters.

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