operating ystem

Operating System:

Operating system is a mediator between user & computer. Operating system are capable of converting human understandable language to machine understandable language & vice versa.

Example of operating system are -

Microsoft Windows Operating system (Win 98, Win 2000, Win XP, Win 2003, Win Vista, Win 7), Linux, Unix, Sun Solaries, Netware.

Operating system are of two types -

1. Client Operating System.
2. Server Operating System.

Client Operating System:

Client operating are those operating system which places request for services from server.

Example: Win 95, Win 98, Win 98SE, Win 2000 Professional, Win 2003 Professional, Win XP, Win Vista, Win Longhorn, Win Seven).

Server Operating System:

Server opearating system are those operating which provide services to the client.

Example: NT 3.0, NT 3.1, NT 3.2, NT 3.5, NT 4.0, Win 2000 Server, Win 2003 Server, Win 2008 Server, Linux, Unix, Sun Solaries, Nevell Netware.



Types of Operating System Based on functionality:

1. Single User Single Task.
2. Single User Multi Task.
3. Multi User Multi Task.



Single User Single Task:

a) In this type of operating system we can't create any user.

b) We can perform only one task at a time.

Example: DOS (Disk Operating System).


Single User Multi Task:

a) In this type of operating system, we can't create any user.

b) We can perform multiple (More than one) tasks at a time.

Example: Win 95, Win 98, Win 98 SE.


Multi User Multi Task:

a) In this type of operating system, we can create any number of user.

b) We can perform multiple (More than one) tasks at a time.


Example: Win 2000 Professional, Win XP, Win 2003 Server etc.