English mathematician and engineer born in London in 1791…

English mathematician and engineer born in London in 1791, often called the father of the computer. Frustrated by errors in printed mathematical tables, he designed the Difference Engine to calculate them automatically, then the ambitious Analytical Engine, featuring memory, a processing unit and punched-card input. Neither was completed in his lifetime, but the Science Museum in London built a working Difference Engine No. 2 in 1991, following his original plans.

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