Whether you have a laptop, desktop, smartphone, or tablet, your device has an operating system (also known as an "OS"). In this video we'll show you what an operating system is and talk about a few of the most common operating systems. We'll also talk about compatibility issues. Some software is designed to work with a variety of operating systems, but other software may only run on one or two. To learn more, check out our written lessons! https://edu.gcfglobal.org/en/computerbasics/understanding-operating-systems/1/ 0:00 Intro 0:18 Definition 0:32 Computer operating systems 0:47 Mobile operating systems 1:02 Compatibility