GB1310751A – Digital arithmetic system for computation of square roots and squares
– Google Patents
GB1310751A – Digital arithmetic system for computation of square roots and squares
– Google Patents
Digital arithmetic system for computation of square roots and squares
Info
Publication number
GB1310751A
GB1310751A
GB1166270*[A
GB1166270A
GB1310751A
GB 1310751 A
GB1310751 A
GB 1310751A
GB 1166270 A
GB1166270 A
GB 1166270A
GB 1310751 A
GB1310751 A
GB 1310751A
Authority
GB
United Kingdom
Prior art keywords
counter
square
contents
gate
analog signal
Prior art date
1969-04-09
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1166270*[A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1969-04-09
Filing date
1970-04-09
Publication date
1973-03-21
1970-04-09
Application filed by Westinghouse Electric Corp
filed
Critical
Westinghouse Electric Corp
1973-03-21
Publication of GB1310751A
publication
Critical
patent/GB1310751A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G06—COMPUTING; CALCULATING OR COUNTING
G06F—ELECTRIC DIGITAL DATA PROCESSING
G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
G06F7/68—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using pulse rate multipliers or dividers pulse rate multipliers or dividers per se
Abstract
1310751 Squarer or square rooter WESTINGHOUSE ELECTRIC CORP 9 March 1970 [9 April 1969] 11662/70 Headings G4A and G4H The invention relates to a digital arithmetic system for computing squares or square roots. Pulses at a frequency f are fed via gate 22 to a counter having flip-flop stages FFI-FFN. The pulses are also fed to a frequency divider which supplies pulses at frequency f/2 to a further N- stage counter X. Corresponding stages of the counters feed AND gates AI-AN which feed an OR gate 14. The OR gate feeds an N-stage counter Y. It can be shown that if counters X and Y commence at zero then the contents of Y are the square root of the contents of X. The contents of counter Y may be compared with the preset contents of a register (Fig. 3, not shown) and when agreement occurs the gate 22 is inhibited. The contents of X are then the square of the preset number. Counter Y may be coupled to a digital to analog converter feeding a differential amplifier also receiving a varying analog signal. When the differential amplifier inhibits the gate the digital value of the square of the analog signal is in the X counter. Alternatively the X counter may be coupled to the converter (Fig. 5, not shown) so that the square root of the analog signal is obtained in the Y counter.
GB1166270*[A
1969-04-09
1970-04-09
Digital arithmetic system for computation of square roots and squares
Expired
GB1310751A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US81463869A
1969-04-09
1969-04-09
Publications (1)
Publication Number
Publication Date
GB1310751A
true
GB1310751A
(en)
1973-03-21
Family
ID=25215604
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1166270*[A
Expired
GB1310751A
(en)
1969-04-09
1970-04-09
Digital arithmetic system for computation of square roots and squares
Country Status (4)
Country
Link
US
(1)
US3557348A
(en)
JP
(1)
JPS508627B1
(en)
FR
(1)
FR2043088A5
(en)
GB
(1)
GB1310751A
(en)
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
BE756157A
(en)
*
1969-09-19
1971-02-15
August Sauter K G
PROCESS FOR NUMERICALLY SQUARE THE RATIO OF A MEASURED VARIABLE FREQUENCY TO A CONSTANT FUNDAMENTAL FREQUENCY
BE754779A
(en)
*
1969-10-02
1971-02-12
Compteurs Comp D
PROCESS AND DEVICE FOR OBTAINING A SIGNAL PROPORTIONAL TO A GEOMETRIC LAMOYEN OF TWO QUANTITIES
US4470019A
(en)
*
1982-07-06
1984-09-04
The Babcock & Wilcox Company
Rate multiplier square root extractor with increased accuracy for transmitter applications
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2910237A
(en)
*
1952-12-05
1959-10-27
Lab For Electronics Inc
Pulse rate multipler
US3049296A
(en)
*
1958-01-13
1962-08-14
North American Aviation Inc
Binary square root mechanization
GB999434A
(en)
*
1961-07-07
1965-07-28
Ass Elect Ind
Improvements relating to measuring apparatus
GB942219A
(en)
*
1962-05-04
1963-11-20
Mullard Ltd
Improvements in or relating to digital electrical calculating apparatus
US3225181A
(en)
*
1962-09-28
1965-12-21
Giannini Controls Corp
Digital computing system for square roots
FR1415849A
(en)
*
1963-10-07
1965-10-29
Wyle Laboratories
Calculator
1969
1969-04-09
US
US814638A
patent/US3557348A/en
not_active
Expired – Lifetime
1970
1970-04-08
FR
FR7012706A
patent/FR2043088A5/fr
not_active
Expired
1970-04-08
JP
JP45029465A
patent/JPS508627B1/ja
active
Pending
1970-04-09
GB
GB1166270*[A
patent/GB1310751A/en
not_active
Expired
Also Published As
Publication number
Publication date
US3557348A
(en)
1971-01-19
FR2043088A5
(en)
1971-02-12
JPS508627B1
(en)
1975-04-05
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Legal Events
Date
Code
Title
Description
1973-08-01
PS
Patent sealed [section 19, patents act 1949]
1975-11-05
PLNP
Patent lapsed through nonpayment of renewal fees
