Charles’ engine did not quite get done
(Though ’twas proved that it could well have run)
Six-point-five score years passed
Seeming not at all fast
But computers had still just begun

Events: Charles Babbage proposes a “difference engine” in a paper to the Royal Astronomical Society; UNIVAC I, the first commercial computer produced in the United States, is dedicated
Years: 1822; 1951
Learn more: http://en.wikipedia.org/wiki/Difference_engine
http://en.wikipedia.org/wiki/UNIVAC_I