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All of the sources that we used for the website can be found right here.
The Abacus http://werwolf.ee.ryerson.ca:8080/~elf/abacus/ IBM http://www.digidome.nl/ibm1.htm http://www-1.ibm.com/ibm/history/ http://money.cnn.com/2002/12/06/news/deals/ibm_rational/ibm_logo.03.jpg Howard Aiken http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Aiken.html Charles Babbage http://ei.cs.vt.edu/~history/Babbage.html http://www.fireinthevalley.com/ Apple http://www.apple-history.com http://www.vintage.org http://www.ncl.cs.columbia.edu/images/apple-logo.jpg Colossus http://www.codesandciphers.org.uk/lorenz/colossus.htm Alan Turing http://ei.cs.vt.edu/~history http://aima.cs.berkeley.edu/graphics/turing.jpg Microsoft http://mairead.freeservers.com/gates.jpg http://wwwshs1.bham.wednet.edu/curric/socst/wa/Micro.htm http://home.att.net/~johncline/images/biopix/altair.jpg