What is an operating system simple definition?

An operating system, or “OS,” is software that communicates with the hardware and allows other programs to run.

Every desktop computer, tablet, and smartphone includes an operating system that provides basic functionality for the device.

Common desktop operating systems include Windows, OS X, and Linux.

What is operating system and its purpose?

An operating system has three main functions: (1) manage the computer’s resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software.