Question

What is operating system? What is the need of operating system.

Answer 1

An operating system (OS) is system softwarethat manages computer hardware and software resources and provides common services for computer programs. The need of an operating system comes in when we want to use a general purposemachine, which requires to handle its hardware differently depending on the application we decide to execute.

Answer 2

$\huge \text{Operating\: System }$

❁ An Operating system is a set of programs which acts as an interface between the user and the computer.

$\huge \text{Need\: Of\: Operating\: System }$

❁ Operating systems manages these resources, resolves conflicts and tries to optimise the performance of the system.

❁ Generally part of the operating system free sites in memory and supervises execution of all other programs executed on the computer.

❁ The user communicates with the computer the operating system commands and program instructions.

❁ It plays an important role in loading programs from disk into memory, displaying messages, translating programs and in outputting results.

❁ Basically it executes the user programs without letting the user bother about the detailed steps involved in executing them.