An operating system or OS is system software that manages computer hardware, software resources, and provides common services for computer programs. All operating systems are system software. Every desktop computer, tablet, and smartphone includes an operating system that provides basic functionality for the device while on the other hand The System software is a type of computer program that is designed to run a computer’s hardware and application programs it controls a computer’s internal functioning, chiefly through an operating system. It also controls peripherals devices such as monitors, printers, and storage devices.