Frederic Calland Williams

Sir Frederic Calland Williams, CBE, FRS (26 June 1911 Stockport – 11 August 1977 Manchester), known as 'F.C. Williams' or (less often) 'Freddie Williams', was an English engineer.

Williams attended the University of Manchester, and received his doctorate in 1936 after studying at Magdalen College, Oxford.

Working at the Telecommunications Research Establishment he was a substantial contributor during World War II to the development of radar.

Computers
In 1946 he was appointed as head of the Electrical Engineering Department of the University of Manchester. There, with Tom Kilburn, he pioneered the first stored-program digital computer, the Manchester Mark 1 computer

He is also recognised for his invention of the Williams-Kilburn tube, an early memory device.