History Of Computer
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The document outlines the history of computers, highlighting key inventions from early computing devices over 5000 years ago to the development of the first electronic computer in 1946. It mentions significant contributions from mathematicians and scientists, including mechanical and electronic calculating machines. Notable inventions such as Napier's bones, the Pascaline calculator, and the ENIAC are discussed along with their functionalities.
History Of Computer
- 3. Respected Sir Jawad Ahmed
- 5. Name Hassnain Mumtaz Roll # 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.
- 8. A Scottish mathematician. Created Logarithm tables. Created a device (Napier’s Bone). Designed in 17th century. Used by accountants & Book keepers.
- 10. A French mathematician. In 1642 invented mechanical adding machine. Pascaline Calculator. Could only add & Subtract.
- 12. A German Scientist. In 1694 developed a calculating machine. Can multiply & divide also. More reliable & accurate.
- 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.
- 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.
- 21. Stands for Electronic Discrete Variable Automatic Calculator. Developed by Dr.John Von Neumann. Could store instructions & data.
- 23. Stands for Universal Automatic Computer. 1st successful computer by Eckert & Mauchly. 1st computer for commercial use. Manufactured for both scientific & commercial applications.