UCLA's Mechanical Brain: 1948

Video shows UCLA's Differential Analyzer, a mechanical computer, in 1948. "In December of 1977, the last working model of a mechanical differential analyzer in the world is donated by UCLA to the Smithsonian Institution for its pioneering computing display. The differential analyzer introduced much of Southern California industry to automatic computing, but became obsolete beginning in 1960 as it was replaced by computing machines with electronic circuits and vacuum tubes. From 1960 on, it was used mainly as a display piece, clanking away occasionally for student and public demonstrations."
Source: www.engineer.ucla.edu/explore/...