Instruction Manual for Charles Babbage's 2nd Difference Engine | Hacker News

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		Instruction Manual for Charles Babbage's 2nd Difference Engine (ed-thelen.org)
		5 points by kqr2 on June 8, 2009 \| hide \| past \| favorite \| 1 comment

chaosmachine on June 8, 2009 [–]

Thanks, I had lost my copy.

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