Dies ist eine alte Version des Dokuments!
(20-digit numbers and 6th-order differences)
Trial portion of Difference Engine No. 1 (1832)
(6-digit numbers and 2nd-order differences)
designed by Charles Babbage 1832
on display at Science Museum, London
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Difference Engine No.2 (Serial No.1)
(31-digit numbers and 7th-order differences)
designed by Charles Babbage 1849
first built at Science Museum 1991 (without printer)
completed at Science Museum 2002 (including printer)
on display at Science Museum, London
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A demo of Charles Babbage's Difference Engine No.2 (Serial No.2) at Computer History Museum, Mountain View, CA, by Robert Scoble 2010