5. Name Roll #
Hassnain Mumtaz 22
Riza Ali 25
Syed Obaid ur Rahman 43
Ch.Waqar Nizam 41
6. The vary first computing device.
Developed 5000 years ago.
Perform simple addition & subtraction.
7.
8. A Scottish mathematician.
Created Logarithm tables.
Created a device (Napier’s Bone).
Designed in 17th century.
Used by accountants & Book keepers.
9.
10. A French mathematician.
In 1642 invented mechanical adding machine.
Pascaline Calculator.
Could only add & Subtract.
11.
12. A German Scientist.
In 1694 developed a calculating machine.
Can multiply & divide also.
More reliable & accurate.
13.
14. In 1822, he invented a difference engine.
In 1842, he developed analytical engine.
Perform 60 additions per minute.
16. Professor at Lowa University.
Invented an electronic computer.
Applied Boolean Algebra to computer
circuitry.
17. Automatic Sequence Controlled calculator.
1st fully automatic calculating machine.
Designed by Howard A.Aiken (Harvard University).
Very reliable but huge in size.
18.
19. Stands for Electronic Numerical Integrator &
Calculator.
Invented by J.P.Eckert & John Mauchly (1946).
1st electronic computer.
Very heavy & large in size.
Consumed 140 kilo Watts of power.
Could perform 5000 additions per second.
20.
21. Stands for Electronic Discrete Variable
Automatic Calculator.
Developed by Dr.John Von Neumann.
Could store instructions & data.
22.
23. Stands for Universal Automatic Computer.
1st successful computer by Eckert & Mauchly.
1st computer for commercial use.
Manufactured for both scientific & commercial
applications.
