This Day in History
January 18, 1938
J.W. Bryce outlines the Harvard Mark I
J.W. Bryce writes a memorandum formalizing IBM's development of a computing machine for Harvard: the Harvard Mark I, completed in 1944. The Harvard Mark I was the first fully automatic machine to be completed and computed three additions or subtractions a second; its memory stored 72 numbers. Several of J.W. Bryce's major inventionshigh-speed multiplying, dividing, cross adding, the read-out, and the emitterwere utilized in the Harvard Mark I.