As you might expect from its name, the "Difference Engine" is a strangely difficult object to describe. You might start by imagining the side of a large crib with uprights ringed by small metal wheels ...
In 1843, Ada Lovelace published notes on Charles Babbage's Analytical Engine, outlining how a machine could follow instructions to perform complex operations and manipulate symbols beyond arithmetic.
Introduction -- Carrying tens : Pascal, Morland, and the challenge of machine calculation -- First carry ; Babbage and Clement mechanize table making -- Artisans and their philosophers : Leibniz and ...
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