Transistor arithmetic circuits for an interleaved-digit computer
R.C.M. Barnes, G.A. Howells, E.H. Cooke-Yarborough · The proceedings of the Institution of Electrical Engineers. Part B, Radio and electronic engineering, including communication engineering · 1956
Earlier papers have described transistor circuits for use as computer elements. This paper describes the development of these, and various gating circuits, as the standard elements from which a digital computer has been constructed. The application of the standard circuits to the arithmetic unit of the computer is illustrated by two examples: an adder of unusual logical design to suit the interleaved-word storage system, and a multiplier system which forms the signed product of two 31-digit binary words in six word-times. A general description of the computer, and details of the magnetic-drum store, are given in accompanying papers.