The fifth season of Computer Chronicles came to a close in June 1988 with an episode focused on computer-aided design (CAD) software. As is true with many major developments in the history of computing, CAD originated in military applications. Indeed, the first use of the term “computer-aided design” is credited to Douglas T. Ross, the head of the Computer Applications Group at MIT’s Servomechanisms Lab in the 1950s, who used CAD to describe a 1959 contract to design automated control systems for the United States Air Force.