Design of the Arithmetic Units of ILLIAC III: Use of Redundancy and Higher Radix Methods
Open Access
- 1 August 1970
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Computers
- Vol. C-19 (8) , 720-733
- https://doi.org/10.1109/t-c.1970.223022
Abstract
In keeping with the experimental nature of the Illinois Pattern Recognition Computer (ILLIAC III), the arithmetic units are intended to be a practical testing ground for recent theoretical work in computer arithmetic. This paper describes the use of redundant number systems and the design of a structure with which multiplication and division are executed radix 256. The heart of the unit is the stored-sign subtracter, a recently discovered member of the family of borrow-save subtracters and carry-save adders. A cascade of these subtracters, controlled by a multiplier recoder, provides multiplication. The same structure, controlled by a "model division" (a quotient recoder), performs division.Keywords
This publication has 1 reference indexed in Scilit:
- Higher-Radix Division Using Estimates of the Divisor and Partial RemaindersIEEE Transactions on Computers, 1968