Operating System

By Abdulla Israr & Simran Rani

 

OPERATING SYSTEM

Description also available in video format (attached below), for better experience use your desktop.

Introduction

An operating system can be defined as a collection of software that is used to manage the computer hardware resources and without an operating system the computer would be useless because the operating system act as an interface between the user and the computer hardware.

 

Functions of OS

·       To start and shut down the computer.

·       To provide an user interface.

·       To manage the programs.

·       To coordinate the tasks.

·       To configure the devices.

·       To manage the memory.

·       To establish an internet connection.

·       To control a network.

·       To provide utilities.


Features of OS

1)    Graphical User Interface (contains graphics & icons)

2)    Multi User (allows multiple users to use the same computer)

3)    Multi Tasking (allows multiple software’s to run at a same time)

4)    Multi Processing (support and utilize more than one processor (CPU) )

5)    Multi Threading (allows different parts of a software to run concurrently)

 

Types of OS

1)    Stand Alone OS/Desktop OS

·       Windows

                                                    i.     Easy to use, familiar, gaming and update.

                                                  ii.     Expensive, not secure and not stable.

·       MAC OS

                                                    i.     Secure, stable, great GUI and better for graphic designers.

                                                  ii.     Expensive, not run all software’s and not gaming.

·       LINUX

                                                    i.     Free, secure and low PC requirement.

                                                  ii.     Hard to learn, use & Install, not familiar and not run all software’s.

2)    Server OS

·       It is designed to provide the platforms for multi users, critical and network applications.

·       The common applications for server OS are

                                                    i.     File & printer sharing

                                                  ii.     Database services

                                                iii.     Web site services

                                                iv.     E-mail, groupware and messaging

                                                  v.     Terminal services

                                                vi.     Caching

3)    Mobile OS

·       Symblan OS

·       I Phone OS

·       RIM Black Berry

·       Windows Mobile

·       Linux

·       Palm OS

 

Video Description

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