research-article

Free access

A built-in table lookup arithmetic unit

Authors:

R. C. Jackson,

W. H. Rhodes, Jr.,

W. D. Winger,

J. G. BrenzaAuthors Info & Claims

IRE-AIEE-ACM '60 (Western): Papers presented at the May 3-5, 1960, western joint IRE-AIEE-ACM computer conference

Pages 239 - 250

https://doi.org/10.1145/1460361.1460394

Published: 03 May 1960 Publication History

PDF eReader

Abstract

A novel approach to arithmetic operations in digital computers is described which requires fewer stages of logic and fewer components than conventional adder circuitry. This is accomplished by using the decimal digits in an arithmetic field to complete memory addresses which in turn are used to reference a set of answers prestored in magnetic core storage. Multiple non-contiguous memory addresses stored in the machine hardware then reference the various digit positions of the sum, difference, or partial product at the proper time in the arithmetic cycle to develop the result. The accuracy of all results is easily verified by simply performing an automatic validity check on the data paths within the computer system.

The machine operator need not concern himself with the "hardware" method used within the computer, since the arithmetic commands commonly found in digital computers (Add, Subtract, etc.) are available in the instruction set for the system shown; table lookup circuitry does the work.

Recommendations

A pipelined divider with a small lookup table
IMCAS'07: Proceedings of the 6th WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems

The design of fast dividers is an important issue in high speed computing because division account for a significant fraction of the total arithmetic operation. Taylor series expansion is a well-known multiplicative scheme for high-performance division ...
An Arithmetic and Logic Unit Optimized for Area and Power
ACCT '14: Proceedings of the 2014 Fourth International Conference on Advanced Computing & Communication Technologies

This paper presents a design of a 4-bit arithmetic logic unit (ALU) by taking vantage of the concept of gate diffusion input (GDI) technique. ALU is the most crucial and core component of central processing unit as well as of numbers of embedded system ...
A nano-scale arithmetic and logic unit using a reversible logic and quantum-dots
Abstract
The arithmetic and logic unit (ALU) is a key element of complex circuits and an intrinsic part of the most widely recognized complex circuits in digital signal processing. Also, recent attention has been brought to reversible logic and quantum-dot ...

Comments

Information & Contributors

Information

Published In

IRE-AIEE-ACM '60 (Western): Papers presented at the May 3-5, 1960, western joint IRE-AIEE-ACM computer conference

May 1960

391 pages

ISBN:9781450378697

DOI:10.1145/1460361

Conference Chair:
R. M. Bennett
IBM Corp., San Jose, California

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 03 May 1960

Permissions

Request permissions for this article.

Request Permissions

Check for updates

Qualifiers

Research-article

Contributors

Other Metrics

View Article Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

0
Total Citations
103
Total Downloads

Downloads (Last 12 months)33
Downloads (Last 6 weeks)3

Reflects downloads up to 01 Mar 2025

Other Metrics

View Author Metrics

Citations

View Options

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Login options

Check if you have access through your login credentials or your institution to get full access on this article.

Recommendations

A pipelined divider with a small lookup table

An Arithmetic and Logic Unit Optimized for Area and Power

A nano-scale arithmetic and logic unit using a reversible logic and quantum-dots

Comments

Published In

Sponsors

Publisher

Publication History

Permissions

Check for updates

Qualifiers

Other Metrics

Article Metrics

Other Metrics

PDF

eReader

Login options

Full Access

Abstract

Recommendations

A pipelined divider with a small lookup table

An Arithmetic and Logic Unit Optimized for Area and Power

A nano-scale arithmetic and logic unit using a reversible logic and quantum-dots

Comments

Information

Published In

Sponsors

Publisher

Publication History

Permissions

Check for updates

Qualifiers

Contributors

Other Metrics

Bibliometrics

Article Metrics

Other Metrics

Citations

View options

PDF

eReader

Login options

Full Access

Share

Share this Publication link

Share on social media

Affiliations