2. History of Computers March 26, 2012Greer Potadle

3. Have you ever wondered how modern computers came about?  Today I will go over all of the most major advances and improvements of computers.

4. Main Topics  Early Computational Devices Early Computational Devices Early Computational Devices  Early Computers Early Computers Early Computers  Generations and Main Components Generations and Main Components Generations and Main Components  Inventors/ Developers Inventors/ Developers Inventors/ Developers  Internet Internet

5. Early Computational Devices  Abacus  First recorded computational machine  Created in 300 B.C.  Babylonians created it  Used to count

6. Early Computational Devices  EDSAC  Electronic Delay Storage Automatic Calculator  Used paper tape for input  Sent outputs to a tele-printer  First thinking machine  Created in 1949 at Cambridge University, England

7. Early Computers  UNIVAC  First commercially available computer  Created in 1951 by Eckert and Mauchly  Separated problems of input and output from computation facility  Punched Cards  How you inputed and got output information  Created in 1970 by Herman Hollerith

8. Early Computers  Mark 1  Used pre-punched paper tape  Invented by Howard Aiken and Grace Hopper  In 1944

9. Early Computers  First Microcomputer  Altair 8800  Created by Ed Roberts in 1975  Purchased for $439

10. Early Computers  ENIAC  First General Purpose Computer  Created in 1946  EDVAC  Electronic Discrete Variable Automatic Computer  First multipurpose computer  Most internal memory  Created in 1947

11. Generations and Main Components  First Generation  Vacuum tubes were added to promote circuitry for memory  Second Generation  Transistors made them faster, cheaper, smaller, energy efficient  Third Generation  Integrated circuits increased speed

12. Generations and Main Components  Fourth Generation  Fir Microprocessor was added  Fifth Generation  Artificial intelligence for computers to understand our language  For More Information on the Generations of Computers For More Information on the Generations of Computers For More Information on the Generations of Computers

13. Inventors/ Developers  Charles Babbage  Considered father of computing  Created analytical machine in 1835  Created a difference machine 1846-1859

14. Inventors / Developers  Department of Defense  Created Arpanet in 1969  Used for scientists to share ideas  Used for military leaders to communicate

15. Inventors / Developers  Blaise Pascal  First digital calculator  In Texas, 1645  Made to help his father with taxes

16. Inventors / Developers  John Von Newman  Created the idea of storing programs as other data  They were performed sequentially

17. Inventors / Developers  Steve Jobs and Steve Wozniak  Created Apple Inc. in 1976  Started with the Macintosh  Bill Gates and Paul Allen  Founded Microsoft in 1975  Created Basic language for software  Altair 8800

18. Internet  Birth of the Net  Started in 1969  Made as communication that was immune to nuclear attacks  During the cold war  Used by military leaders

19. Internet  Tim Berners-Lee  Created World Wide Web (WWW)  In 1991  Marc Andreessen  Created Mosaic  First Graphical Browser  1992

20. Works Cited  “Blaise Pascal (1623-1662).” Oregon State University. Oregon State University. 15 January 2011. 2 April 2012.  “History of the UNIVAC Computer.” About.com Inventors. 2012. 2 April 2012.

21. The End  Now you have learned about the most historical events of the computer. I hope you enjoyed it!  Now you have learned about the most historical events of the computer. I hope you enjoyed it!