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Introduction of Operating System


An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. The operating system is a vital component of the system software in a computer system.

It is a program with following features:

  •  An operating system is a program that acts as an interface between the software and the computer hardware.
  • It is an integrated set of specialised programs that are used to manage overall resources and operations of the computer.
  • It is specialised software that controls and monitors the execution of all other programs that reside in the computer, including application programs and other system software.


Objectives of Operating System

  • To make a computer system convenient to use in an efficient manner
  • To hide the details of the hardware resources from the users
  • To provide users a convenient interface to use the computer system
  • To act as an intermediary between the hardware and its users and making it easier for the users to access and use other resources
  • To manage the resources of a computer system
  • To keep track of who is using which resource, granting resource requests, according for resource using and mediating conflicting requests from different programs and users
  • To provide efficient and fair sharing of resources among users and programs


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