FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -System call provides the services of the operating system to the user programs via Application Program Interface(API). It provides an interface between a process and operating system to allow user-level processes to request services of the operating system. System calls are the only entry points into the kernel system.

Detailed explanation-2: -What is an operating system? An operating system is the most important software that runs on a computer. It manages the computer’s 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.

Detailed explanation-3: -The primary purpose of an operating system is to make the most efficient use of the computer hardware. Operating system is a software that manages computer hardware and software resources and provide common services for computer programs.