An Operating system (OS) is a software which acts as an interface between the end user and computer hardware. It is an integrated set of specialized programs used to manage overall resources and operations of the computer.Every general-purpose computer must have an operating system to run other programs and applications.It controls and monitors the execution of all other programs that reside in the computer, including application programs and other system software.
Examples of Operating system
There are many types of operating system. Some most popular examples of operating system are:
Unix Operating System
Unix was initially written in assembly language. Later on, it was replaced by C, and Unix, rewritten in C and was developed into a large, complex family of inter-related operating systems. The major categories include BSD, and Linux.“UNIX” is a trademark of The Open Group which licenses it for use with any operating system that has been shown to conform to their definitions.
Mac-OS is developed by Apple Inc. and is available on all Macintosh computers. It was formerly called “Mac OS X” and later on “OS X”. MacOS was developed in 1980s by NeXT and that company was purchased by Apple in 1997.
Microsoft Windows is most popular and widely used operating system. It was designed and developed by Microsoft Corporation. The current version of operating system is Windows-10.Microsoft Windows was first released in 1985. In 1995, Windows 95 was released which only used MS-DOS as a bootstrap.
Apple’s iOS is one of the most popular smartphone operating systems, second only to Android. It runs on Apple hardware, including iPhones, iPad tablets and iPod Touch media players.
Signature features of iOS include the App Store where users buy apps and download free software, an emphasis on security including strong encryption to limit what unauthorized users can extract from the phone, and a simple, streamlined interface with minimal hardware buttons.
Google’s Android OS
Android is the most popular operating system in the world judging by the number of devices installed. Largely developed by Google, it’s chiefly used on smartphones and tablets. Unlike iOS, it can be used on devices made by a variety of different manufacturers, and those makers can tweak parts of its interface to suit their own needs.
Users can download custom versions of the operating system because large portions of it are open source, meaning anyone can legally modify it and publish their own. However, most people prefer to stick with the version that comes on their devices.
Android, like iOS, comes with an application and media store called the Play Store built by Google. Some phone manufacturers and other organizations also offer their own stores to install software and media.
Various operating systems like OS/2, BeOS and some other operating system which were developed over time are no longer used now. Because they could contribute to market share.
Read more: Function of OS
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