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Operating Systems (Structure: (Hardware, Software, Application Programs,…

- - - - 1 Program creation
      - 2 Program execution
      - 3 Input/Output operations
      - 4 Error detection
      - 5 Resource allocation
      - 6 Accounting
      - 7 protection
- - - - systems where no user accounts are required.
      - operating system which run on standalone
      - They are popularly associated with Desktop
  - - - Provides regulated access for a number of users by maintaining
      - a database of known users.
      - Refers to computer systems that support two or more simultaneous users.
      - Another term for multi-user is time sharing