DocumentCode :
1105755
Title :
Design of the Arithmetic Units of ILLIAC III: Use of Redundancy and Higher Radix Methods
Author :
Atkins, Daniel E.
Author_Institution :
IEEE
Issue :
8
fYear :
1970
Firstpage :
720
Lastpage :
733
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 :
Arithmetic unit, computer arithmetic, division, higher radix arithmetic, ILLIAC III, multiplication, redundant number systems, signed-digit subtracter, stored-sign subtracter.; Adders; Computer science; Design methodology; Digital arithmetic; Floating-point arithmetic; Heart; Logic design; Military computing; Pattern recognition; Testing; Arithmetic unit, computer arithmetic, division, higher radix arithmetic, ILLIAC III, multiplication, redundant number systems, signed-digit subtracter, stored-sign subtracter.;
fLanguage :
English
Journal_Title :
Computers, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9340
Type :
jour
DOI :
10.1109/T-C.1970.223022
Filename :
1671615
Link To Document :
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