difference engine day

From the ↑Charles Babbage biography at ↑The MacTutor History of Mathematics archive (University of St Andrews, Scotland): Babbage is without doubt the originator of the concepts behind the present day computer. The computation of logarithms had made him aware of the inaccuracy of human calculation around 1812. He wrote in [C Babbage, Passages from the life of a philosopher (London, 1864).]:-     … I was sitting in the rooms of the Analytical Society, at Cambridge, my head leaning forward on the table in a kind of dreamy mood, with a table of logarithms lying open before me. Another member, … Continue reading