Operating System – Overview

An operating system (OS) is a collection of software that accomplishes computer hardware possessions and delivers collective facilities for computer programs. It is a dynamic module of the system software in a computer system.  It is system software that acts as an interface between user and the computer. It’s just like a soul of computer. it is a collection of program that supervises and control over all function of computer. It manages memory and processes as well as all of its software and hardware. It create link between users and computer. Without an operating system computer is useless.


Operating System is such a software which helps or do all the multiple jobs e.g. file management, memory management, process management, handling input and output, and monitoring peripheral devices such as disk drives and printers.

Definition –

Operating system is system software which performs as an edge between the user and the computer hardware and maintains the implementation of all kinds of programs.

There are some of the important functions of an operating system which given below:-

  • Memory Management
  • Processor Management
  • Device Management
  • File Management
  • Security
  • Control over system performance
  • Job accounting
  • Error detecting aids
  • Coordination between other software and users