The Empire Strikes Back

The Empire Strikes BackMay 21, 1980

The sequel to the the smash success Star Wars, The Empire Strikes Back is released on this day, almost exactly 3 years after the release of the original film. The pioneering use of special effects technology in the Star Wars Trilogy transformed the movie industry.

IBM Announces the “Defense Calculator”, Model 701

IBM 701

May 21, 1952

The IBM 701 was the company’s first commercial scientific computer, but I guess they figured that calling it a “calculator” would help it sell better. Perhaps they were right, because only expecting to sell five, the company ended up selling nineteen to government, large companies, and universities.