The Design of Colossus
http://ieeexplore.ieee.org/document/4640709/ [ieeexplore.ieee.org]
2017-06-19 05:33
This article describes the construction and operation of the Colossus machines. The machines had most if not all of the essential features of a modern computer, except that variable programming was provided not by memory store but by hard-wired function units selected and interconnected by switches operated by the mathematician-programmers.
Rogue text: http://www.ivorcatt.com/47c.htm