25-08-2017, 09:32 PM
OPERATING SYSTEM INTRODUCTION
1OPERATING SYSTEM.ppt (Size: 687.5 KB / Downloads: 362)
OBJECTIVES
To define the term Operating System.
Computer System layers.
Types of Operating Systems.
Interpret the basic functions of Operating System.
PURPOSE OF AN OPERATING SYSTEM
The purpose of an operating system is
to provide an environment in which a
user may execute programs.
OPERATING SYSTEM
An Operating System is a system software which may be viewed as an organized collection of software consisting of procedures for operating a computer and providing an environment for execution of programs.
OTHER DEFINITIONS
An Operating System is a control program.
An Operating System is similar to a Government.
An Operating System can be defined as a Resource Manager.
Distributed Operating System
A distributed computing system consists of a number of computers that are connected and managed so that they automatically share the job processing load among the constituent computers, or separate the job load as appropriate particularly configured processors.
Networked vs. Distributed
In n/w os, the users are aware of the existence of multiple computers and can log in to remote machines and can copy files from one machine to another ……
D.os appears to its users as a traditional uni-processor system, even though it is actually composed of multiple processor..
Transparency- users should not be aware of where their programs are being run or where their files are located ….