Operating Systems Operating System (OS) is software that acts as an interface between computer hardware components and the user. Every computer system must have at least one operating system to run other programs. Applications like Browsers, MS Office, Notepad Games, etc., need some environment to run and perform their tasks. The OS helps you to communicate with the computer without knowing how to speak the computer's language. The user can't use any computer or mobile device without having an operating system. Introduction to Operating System In this OS tutorial , you will learn: What is an Operating System? History Of OS Examples of Operating System with Market Share Types of Operating System (OS) Functions of Operating System Features of Operating System (OS) Advantage of using Operating System Disadvantages of using Operating System What is Kernel in Operating System? Difference between Firmware and Operating System Dif