Operating Systems

• Program for managing system resources

  • controls interaction with user
  • sharing of memory/disk, communications, etc.

• Example Operating Systems

  • Unix, MSDOS, Mac, IBM, Windows...

• Windows offers

  • use of relatively cheap hardware
  • standard user-interface
  • & standard programmer interface!

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Allows users to run programs.

Provides the basic facilities needed by all programs.

Normally started automatically when machine is switched on.