The operating system controls every task your computer carries out and manages system resources.
At the simplest level, an operating system does two things: It manages the hardware and software resources of the system.
How does the OS manage the processor?
The basic unit of software that the operating system deals with in scheduling the work done by the processor is either a process or a thread, depending on the operating system. It is processes, rather than applications, that the operating system controls and schedules for execution by the CPU.
What is the operating system on this computer?
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. Nearly every computer program requires an operating system to function. The two most common operating systems are Microsoft Windows and Apple’s macOS.
How does the OS interact with application software?
How does the operating system interact with application software? Rather than having the same blocks of code appear in each software application, the OS includes the blocks of code to which software applications refer. These blocks of code are called application programming interfaces (APIs).
How does the operating system control the software and hardware?
The operating system’s job
Your computer’s operating system (OS) manages all of the software and hardware on the computer. Most of the time, there are several different computer programs running at the same time, and they all need to access your computer’s central processing unit (CPU), memory, and storage.