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Addendum to "The Focus Number System"
September 1979 (vol. 28 no. 9)
pp. 693
ASCII Text
x 
 
S.C. Lee, A.D. Edgar, "Addendum to "The Focus Number System"," IEEE Transactions on Computers, vol. 28, no. 9, pp. 693, September, 1979.
 
 
BibTex
x
 
@article{ 10.1109/TC.1979.1675442,
author = {S.C. Lee and A.D. Edgar},
title = {Addendum to "The Focus Number System"},
journal ={IEEE Transactions on Computers},
volume = {28},
number = {9},
issn = {0018-9340},
year = {1979},
pages = {693},
doi = {http://doi.ieeecomputersociety.org/10.1109/TC.1979.1675442},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - JOUR
JO - IEEE Transactions on Computers
TI - Addendum to "The Focus Number System"
IS - 9
SN - 0018-9340
SP
EP
EPD - 693
A1 - S.C. Lee,
A1 - A.D. Edgar,
PY - 1979
KW - null
VL - 28
JA - IEEE Transactions on Computers
ER -
 
S.C. Lee, School of Electrical Engineering and Computing Sciences, University of Oklahoma
In 1971 Kinsbury and Rayner, publishing under the title "Digital Filtering Using Logarithmic Arithmetic" [1] disclosed a sign-plus-logarithm number system, and a means of performing addition through single dimensional lookup using the formula c = b + F(a - b). The system was demonstrated on a computer. In 1975 Swartzlander and Alexopoulos disclosed Kinsbury's logarithmic arithmetic as "The Sign/Logarithm Number System" [2]. In 1977, without knowledge of prior art, we reinvented the wheel a third time, dubbing it "Focus," after the focus of resolution around the zero origin [3]. We wish now to acknowledge Kinsbury and Rayner as the pioneer authors, and also Swartzlander and Alexopoulos as prior to our publication.
Citation:
S.C. Lee, A.D. Edgar, "Addendum to "The Focus Number System"," IEEE Transactions on Computers, vol. 28, no. 9, pp. 693, Sept. 1979, doi:10.1109/TC.1979.1675442
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