The term "operating system" means
The term "operating system" means a set of programs which control computer working.
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.
Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.
An operating system (OS) is the program that, after being initially loaded into the computer by a boot program, manages all the other programs in a computer.