What is an operating system? Briefly explain its any two functions.
Answers
Answer:
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.
Answer:
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. ... Operating systems are found on many devices that contain a computer – from cellular phones and video game consoles to web servers and supercomputers.
An operating system has three main functions: (1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers, (2) establish a user interface, and (3) execute and provide services for applications software. Keep in mind, however, that much of the work of an operating system is hidden from the user; many necessary tasks are performed behind the scenes. In particular, the first listed function, managing the computer's resources, is taken care of without the user being aware of the details. Furthermore, all input and output operations, although invoked by an applications program, are actually carried out by the operating system. Although much of the operating system functions are hidden from view, you will know when you are using an applications software package, and this requires that you invoke-call into action-the operating system. Thus you both establish a user interface and execute software.