What Is an Operating System? An operating system (OS) is the fundamental software that acts as the brain of your computer. It's the master program that orchestrates all the computer's operations, ...

An operating system is the essential software that's needed to run your computer's suite of software. Everything from video games to web browsing, basic word processing, and more is down thanks to the ...

It's a pretty safe assumption to say that virtually all devices that you've owned in the last 20 years have descended from one of the big three operating system families: Windows, Linux, or Unix. Your ...