What is Operating System (OS) ?

  

What is operating system (OS)


An operating system is a program which acts as an interface between a user of a computer and the computer hardware. The purpose of an operating system is to provide an environment in which a user may execute programs. The primary goal of an operating system is thus to make the computer system convenient to use. OS is the most important program that run of a computer. 

An operating system is a software which performs all the basic tasks like file management or file system, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
Examples of popular micro computer OS are Windows, DOS, OS/2 for PCs and Mac OS for Apple computers, etc.


what is operating system (os)
What is operating system (OS)


TYPES OF OS ( OPERATING SYSTEM)


Below is a basic list of the different types of operating system and a few examples of operating systems that fall into each of the categories. Many computer operating systems will fall into more than one of the below categories.

  • GUI (Graphical User Interface) Operating System

  • Multi - user Operating System

  • Multiprocessing Operating System

  • Multitasking Operating System

  • Multithreading Operating System

  1. GUI Operating System :- 

GUI stands for Graphical User Interface. A GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse. Below are some examples of GUI Operating Systems.

  • Microsoft Windows

  • Mac OS

  • X window System


  1. Multi-user Operating System :-

A multi-user operating system allows for multiple users to use the same computer at the same time or different times. Below are some examples of multi-user operating systems.

  • UNIX

  • MVS


  1. Multiprocessing Operating System :-

An operating system capable of supporting and utilizing more than one computer processor. Below are some examples of multiprocessing operating systems.

  • UNIX

  • OS/2

  1. Multitasking Operating System :-

An operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking operating systems.

  • Linux

  • Microsoft Windows

  1. Multithreading Operating System :-

Multithreading operating systems are operating systems that allow different parts of a single software program to run concurrently. Multithreading is the ability of an OS to execute different parts of a program, called threads, simultaneously. Operating system that would fall into this category are:

  • Linux

  • UNIX

  • Windows 2000


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