Comment Don't forget the ABC... (Score 1) 65
It would be remiss to ignore the Atanasoff-Berry Computer (1942). It predated Harwell (and ENIAC).
http://en.wikipedia.org/wiki/Atanasoff%E2%80%93Berry_Computer
...when fits of creativity run strong, more than one programmer or writer has been known to abandon the desktop for the more spacious floor. - Fred Brooks, Jr.