OPERATING SYSTEM

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Operating System — Notes for Students

Operating System — Student Notes

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Definition of an Operating System

  • An operating system (OS) is system software that manages the hardware and software resources of the computer.
  • An operating system is software that controls the overall activity of a computer.
  • The term operating system (OS) denotes the collection of programs that act as an interface between the user’s program and the computer hardware.

The main purpose of the operating system is to effectively and judiciously manage the computer system resources, such as processors, main memory, secondary storage, input and output devices and files.

Examples of Operating Systems

DOS (Disk Operating System)
Windows (95, 98, 2000, NT, ME, XP, 7, 8, 10)
Unix
Linux
Mac
iOS
Android
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