Operating system

An operating system or OS is a software program that enables the computer hardware to operate with the computer software. Without a computer operating system, computer and software programs would be useless. When computers were first introduced, the user interacted with them using a command-line interface, which required commands. Today, almost every computer is using a GUI (Graphical User Interface) the operating system that is much easier to use and operate.

Tip: Some people may refer to an OS as "operating software." Although this is a valid term, it is more appropriate to refer to this software as an "operating system." Examples of computer operating systems

Microsoft Windows 10 - PC and IBM compatible operating system. Microsoft 

Windows is the most common and used operating system.

Apple macOS - Apple Mac operating system. Today, the only Apple computer operating system is macOS.

Ubuntu Linux - A popular variant of Linux used with PC and IBM compatible computers.

Google Android - Operating system used with Android compatible phones and tablets. iOS - Operating system used with the Apple iPhone and iPads.

Chromium - Google operating system used with Chromebooks.