history of computers
DESCRIPTION
History of Computers. Is this a computer?. http://commons.wikimedia.org/wiki/File:Dell_Desktop_Computer_in_school_classroom.jpg. How about this?. What about this?. http://commons.wikimedia.org/wiki/File:Chinese-abacus.jpg. Or this?. Abacus. Is a simple device to aid in calculating. - PowerPoint PPT PresentationTRANSCRIPT
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© 2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
History of Computers
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Is this a computer?
http://commons.wikimedia.org/wiki/File:Dell_Desktop_Computer_in_school_classroom.jpg
![Page 3: History of Computers](https://reader036.vdocument.in/reader036/viewer/2022062521/56816720550346895ddba1ce/html5/thumbnails/3.jpg)
©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
How about this?
![Page 4: History of Computers](https://reader036.vdocument.in/reader036/viewer/2022062521/56816720550346895ddba1ce/html5/thumbnails/4.jpg)
©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
What about this?
http://commons.wikimedia.org/wiki/File:Chinese-abacus.jpg
![Page 5: History of Computers](https://reader036.vdocument.in/reader036/viewer/2022062521/56816720550346895ddba1ce/html5/thumbnails/5.jpg)
©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Or this?
![Page 6: History of Computers](https://reader036.vdocument.in/reader036/viewer/2022062521/56816720550346895ddba1ce/html5/thumbnails/6.jpg)
©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
AbacusIs a simple device to aid in
calculating.This is an Inca Quipu.png1
And a Roman Abacus2
14th edition of the Meyers Konversationslexikon 18882Reconstruction of a Roman Abacus, made by the RGZ Museum in Mainz, 1977
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
AbacusMany countries still use Abacuses
in day- to-day sales calculations
http://www.flickr.com/photos/todbaker/2305853928
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Abacus
Primarily used as a aid for addition and subtraction
For more complex operations other tools are often used, such as slide rules
http://commons.wikimedia.org/wiki/File:Chinese-abacus.jpg
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Slide ruleWhile the abacus was in use over
4000 years ago, the slide rule is a relatively modern device.
William Oughtred invented the slide rule around 1622 AD
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Slide rule
During the 1960s computers became a resource that engineers could use.
The engineers who designed the SR-71 Blackbird still used slide rules on a daily basis.
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
The Blackbird set a coast-to-coast record time of 67 minutes 54 seconds.
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Mechanical computers
http://commons.wikimedia.org/wiki/File:Curta_Mechanical_computer_img_1651.jpg
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Univac
http://www.flickr.com/photos/diorama_sky/2902656083/
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Modern Computer
http://commons.wikimedia.org/wiki/File:Dell_Desktop_Computer_in_school_classroom.jpg
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Vacuum Tubes
http://www.flickr.com/photos/nickames/4081648117/
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©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE
Transistor
http://www.flickr.com/photos/oskay/2105641530