Introduction

Operating system

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Operating system is an interface between user and hardware
• Operating system is a software which manages the hardware

Function's  of operating system :-

1) Convenience: A user can use operating system conveniently.

2) Efficiency: is used to access the system resources efficiently.

3) Ability to evolve: An operating system is designed in such a way that it will allow us for effective development testing and introduction of new system function without interfering the service.

4) Through Put: An operating system can achieve maximum through put i.e. number of task per unit time.



Types of operating system :-
CUI                                               GUI          
• Character user interface.    • Graphical user interface
• It is used in connection      • It is used in connection 
with the computer.                 with the computer.
• User need to type on the     •  User can operate by 
keyboard to proceed.                clicking with mouse.
• It is not easy to navigate    • It is easy to navigate
• We can write only text in    • Graphics and icons are 
CUI.                                       there in GUI.


Operating system consist of processors, application, disk, printers, main memory, input and output devices such as keyboard, mouse, monitor, printers.


Computer Hardware

Computer Hardware consist of 4 parts:-

1) Hardware: it provides basic system components 
Example: compiler, assemblers, text editor, data base system.

2) Operating system: it control and co-ordinate a use of hardware among various applications for the end user.

3) Application program: it define in such a way in which these system resources can be used to solve the computing problems.

4) Users: People, computers, Machines , etc.

LEAVE SOME SPACE FOR DIAGRAM 

Type of views: 
There are 2 types of  views they are:- 

1) User view: user want convenience, does not depends upon resource utilization.

2) System view: It is focus on resource allocation among different applications for the end users.


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