We have a large collection of Operating System the best price at our Multimedia kingdom. Microsoft original brand new Operating System that provides common services for computer programs. An Operating System (OS) is System software that manages computer hardware and software resources. An Operating System is the most important software that runs on a computer. It manages the computer memory and processes, as well as all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer’s language.