What is Operating system? Full explained

An operating system (sometimes abbreviated as "OS")is the program that, after being initially loaded into the computer by a boot program,manges all the other programs in a computer . The other programs are called applications or application programs. The application programs make use of the operating system by making requests for services through a defined application program interface (API). IT addition, users can interact directly with the operating system through a user interface such as a commad language or a graphical user interface (GUI). It accepts keyboard or mouse inputs from users and displays the results of the actions and allows the uset to run applications, or communicate with other computers via networked connections.