http://en.wikipedia.org/wiki/Charles_Babbage
http://www.charlesbabbage.net/
_ Charles Babbage -- Difference Engine No. 2
http://www.youtube.com/watch?v=77ORmcQceLc
_ Charles Babbage Analytical Engine
http://www.youtube.com/watch?v=GJiyGvoYd5E
http://en.wikipedia.org/wiki/Charles_Babbage
http://www.charlesbabbage.net/
_ Charles Babbage -- Difference Engine No. 2
http://www.youtube.com/watch?v=77ORmcQceLc
_ Charles Babbage Analytical Engine
http://www.youtube.com/watch?v=GJiyGvoYd5E