What is Operating System?

An operating system is a program that manages the computer hardware, software resources and provides common services for computer programs.

And write sevral your familiar operating systems in details.

1. Linux is an open source Unix-like OS. Because its kernel is open source, there are a huge amount of distributions. Linux was originally developed for PCs based on the Intel x86 architecture, but has since been ported to more platforms than any other operating system. The dominating OS on smartphones, Android is a variation of Linux as well. And Linux is the leading operating system on servers and other big iron systems such as mainframe computers, and the only OS used on TOP500 supercomputers.


2. Microsoft Windows is a graphcial OS, widely used on PCs and laptops. As a closed source system, Windows is developed and sold by Microsoft only. It was released as a graphical OS shell for MS-DOS, which has a window-like interface. And it is the most popular system on PCs since was introduced.