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Charles Babbage
... Charles Babbage, FRS (26 December 1791 – 18 October 1871) was an English mathematician, philosopher, inventor and mechanical engineer who originated the concept of a programmable computer ... Considered a "father of the computer", Babbage is credited with inventing the first mechanical computer that eventually led to more complex designs ... In 1991, a perfectly functioning difference engine was constructed from Babbage's original plans ...