Subject : Structured Programming Approach

Title : Introduction to Computer, Algorithm and Flowchart

Marks : 5M

An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs.

An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.

Some popular Operating Systems include Linux, Windows, OS X, VMS, OS/400, AIX, z/OS, etc.

Components/Function of Operating System

Following are some of important functions of an operating System.

• Memory Management

• Processor Management

• Device Management

• File Management

• Security

• Control over system performance

• Job accounting

• Error detecting aids

• Coordination between other software and users