What is Computer?



Microsoft Office (Basic Course)



Computer: Lecture no 2

Lecture no 2

                

<!--[if !supportLists]-->ó  <!--[endif]-->Types Of Computer

These are the types of Computer.

<!--[if !supportLists]-->ó <!--[endif]-->Super Computer

<!--[if !supportLists]-->ó <!--[endif]-->Main Frame  Computer

<!--[if !supportLists]-->ó <!--[endif]-->Mini Computer

<!--[if !supportLists]-->ó <!--[endif]-->Micro Computer

<!--[if !supportLists]-->ó <!--[endif]-->Lap Top  Computer

 

<!--[if !supportLists]-->v  <!--[endif]-->Super Computer

<!--[if !supportLists]-->ó <!--[endif]-->Very large in a size.

<!--[if !supportLists]-->ó <!--[endif]-->Very Expensive

<!--[if !supportLists]-->ó <!--[endif]-->Normally not available in a private sectors.

<!--[if !supportLists]-->ó <!--[endif]-->Used for Atomic Research and weather forecasting.

<!--[if !supportLists]-->ó <!--[endif]-->Cray1 was the first super computer.

        

<!--[if !supportLists]-->v  <!--[endif]-->Mainframe Computer

 

<!--[if !supportLists]-->ó <!--[endif]-->Smaller then Super Computer

<!--[if !supportLists]-->ó <!--[endif]-->Store huge amount of Data.

<!--[if !supportLists]-->ó <!--[endif]-->Used in Nadra offices ,PIA and Banks,

<!--[if !supportLists]-->v  Mini Computer

<!--[if !supportLists]-->ó <!--[endif]-->Smaller then Super and Mainframe Computers.

<!--[if !supportLists]-->ó <!--[endif]-->Used in Universities and embassies. 

                  

<!--[if !supportLists]-->v  Micro Computer

<!--[if !supportLists]-->ó <!--[endif]-->Less expensive

<!--[if !supportLists]-->ó <!--[endif]-->Used in School, College and small Offices.

<!--[if !supportLists]-->vLap Top Computer

<!--[if !supportLists]-->ó <!--[endif]-->Small in a size

<!--[if !supportLists]-->ó <!--[endif]-->Working speed is better

<!--[if !supportLists]-->ó <!--[endif]-->Normally used by the Business man and Travelling people.

 

           History of Computer

<!--[if !supportLists]-->ó  Abacus

<!--[if !supportLists]-->o   <!--[endif]-->13^th Century

<!--[if !supportLists]-->o   <!--[endif]-->First made and used by China.

<!--[if !supportLists]-->o   <!--[endif]-->Used for Addition and Subtraction.

<!--[if !supportLists]-->o   <!--[endif]-->Chinese Abacus name was Saunpan.

    

               

<!--[if !supportLists]-->ó  Analytical Engine

<!--[if !supportLists]-->o   <!--[endif]-->17^th  Century  

<!--[if !supportLists]-->o   <!--[endif]-->Made by Charles Babbage

<!--[if !supportLists]-->o   <!--[endif]-->He is known as the Father of Modern Computer.

<!--[if !supportLists]-->o  <!--[endif]-->He was a man who gave the idea of First General purpose computer.

<!--[if !supportLists]-->ó Lady Ada Augusta

<!--[if !supportLists]-->o   <!--[endif]-->She was the Assistant of Charles Babbage in his work.    

<!--[if !supportLists]-->o   <!--[endif]-->First lady Programmer of the world.

<!--[if !supportLists]-->o   <!--[endif]--> A Great Mathamatian.

Computer: Lecture no 1

CDC

COMPUTER DEVELOPMENT CONCEPT

                                             

<!--[if !supportLists]-->v COMPUTER DEFINATION

Computer is an Electronic Device which accept Data  from the User with the help of an Input devices then Store it, Process it ,  Share it and Retrieves its result onto an Output devices.

 

 

 

<!--[if !supportLists]-->v <!--[endif]-->Block Diagram Of  Computer

Input Devices

R A M C P U

Output Devices

<!--[if !supportLists]-->1.   <!--[endif]-->RAM  stands for Ran dam Access Memory.

<!--[if !supportLists]-->2.   <!--[endif]-->CPU    stands   for Central Processing Unit

 

<!--[if !supportLists]-->v <!--[endif]-->Input Devices

       

         These   Devices are used to enter the Data in the Computer.

         Exp:  Mouse, Keyboard, Joy Stick, Touch Screen,  Mic, Scanner, Track ball ,

         Light pen etc,

 

<!--[if !supportLists]-->v <!--[endif]-->Output  Devices

These devices are used to received the Data from the Computer.

Exp: Monitor, Printer , Plotter , Projector, Speaker etc.

 

<!--[if !supportLists]-->v <!--[endif]-->Types  Of   Computer

There   are Two Main types of Computer.

<!--[if !supportLists]-->ó <!--[endif]-->Dedicated Computer

They are design for   Special purpose.

They can perform only one job at a time.

Exp: Missile Control Machine etc

<!--[if !supportLists]-->ó <!--[endif]-->Non Dedicated Computer

They are design for General purpose.

They can perform multiples jobs at a time.

Exp: PC (Personal Computer)

            

<!--[if !supportLists]-->ó <!--[endif]-->Basic  Types  Of  Computer

   

               There are Three  basic types of  Computer.

<!--[if !supportLists]-->ó <!--[endif]-->Digital Computer

<!--[if !supportLists]-->ó  <!--[endif]-->Analog Computer

<!--[if !supportLists]-->ó Hybrid Computer

<!--[if !supportLists]-->Ø <!--[endif]-->Digital Computer

They can  perform mathematical calculation.

They can accept data in the form of digits .

Exp: +, - , *, /

<!--[if !supportLists]-->Ø <!--[endif]-->Analog Computer

They can Measure the physical Quantities.

Exp: Temperature, pressure etc.

 

<!--[if !supportLists]-->Ø Hybrid Computer

Word  hybrid means Mixture or combination.

This type of computer is the combination of Digital and Analog Computer.

Exp: Petrol Pump, ECG