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Maurice Wilkes assembled the EDSAC, the first practical stored-program computer, at Cambridge University. His ideas grew out of the Moore School lectures he had attended three years earlier.
For programming the EDSAC, Wilkes established a library of short programs called subroutines stored on punched paper tapes.
Technology: vacuum tubes
Speed: 714 operations per second
The Manchester Mark I computer functioned as a complete system using the Williams tube for memory. This University machine became the prototype for Ferranti Corp.´s first computer.
Start of project: 1947
Completed: 1949
Add time: 1.8 microseconds
Input/output: paper tape, teleprinter, switches
Memory size: 128 + 1024 40-digit words
Memory type: cathode ray tube, magnetic drum
Technology: 1,300 vacuum tubes
Floor space: medium room
Project leaders: Frederick Williams and Tom Kilburn
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