Diagram of an algorithm for the Analytical Engine for the computation of Bernoulli numbers, from Sketch of The Analytical Engine Invented by Charles Babbage by Luigi Menabrea with notes by Ada Lovelace
Letter from Ada Lovelace to Charles Babbage 1843 In this letter, Lovelace suggests an example of a calculation which “may be worked out by the engine without having been worked out by human head and hands first”.