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  • An operating system is a program which acts as an interface between a user and a computer hardware.
  • A window is a typical rectangular area pertaining to an application or a document or a dialog
  • The program available under Programs section of Start menu cab be started by click at Start, then at Al Programs and then at the desired program or group.
  • To find files or folder, Use Start  Find  File or Folders command are clicked
  • The operating system performs the following functions like
    • Process Management
    • Storage Management
    • Information Management
  • Various Operating systems are Linux, Windows XP, Windows vista, Mac OS X etc.

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