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15/02/1951 The first computer for commercial use is tested
3:35
Information Age: The computer that changed our world
1:21
Lyons Electronic Office (LEO) | Standing on the Shoulders of Giants
13:19
LEO the automatic office (1957)
5:19
LEO - Celebrating The Pioneers
The LEO I was the first computer used for commercial business applications. The computer, carrying out a simple test program, was shown to HRH Princess Elizabeth. LEO series computers were still in use until 1981.
Essentials
Origins and initial design
Technical description
Applications and successors
Legacy