FR2357958A1 - Dispositif de multiplication des nombres presentes en code complementaire - Google Patents

Dispositif de multiplication des nombres presentes en code complementaire

Info

Publication number
FR2357958A1
FR2357958A1 FR7720935A FR7720935A FR2357958A1 FR 2357958 A1 FR2357958 A1 FR 2357958A1 FR 7720935 A FR7720935 A FR 7720935A FR 7720935 A FR7720935 A FR 7720935A FR 2357958 A1 FR2357958 A1 FR 2357958A1
Authority
FR
France
Prior art keywords
register
storing
control unit
additional code
multiplication system
Prior art date
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.)
Granted
Application number
FR7720935A
Other languages
English (en)
French (fr)
Other versions
FR2357958B1 (enExample
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.)
GUSEV VALERY
Original Assignee
GUSEV VALERY
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.)
Filing date
Publication date
Application filed by GUSEV VALERY filed Critical GUSEV VALERY
Publication of FR2357958A1 publication Critical patent/FR2357958A1/fr
Application granted granted Critical
Publication of FR2357958B1 publication Critical patent/FR2357958B1/fr
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/52Multiplying; Dividing
    • G06F7/523Multiplying only
    • G06F7/533Reduction of the number of iteration steps or stages, e.g. using the Booth algorithm, log-sum, odd-even
    • G06F7/5334Reduction of the number of iteration steps or stages, e.g. using the Booth algorithm, log-sum, odd-even by using multiple bit scanning, i.e. by decoding groups of successive multiplier bits in order to select an appropriate precalculated multiple of the multiplicand as a partial product
    • G06F7/5336Reduction of the number of iteration steps or stages, e.g. using the Booth algorithm, log-sum, odd-even by using multiple bit scanning, i.e. by decoding groups of successive multiplier bits in order to select an appropriate precalculated multiple of the multiplicand as a partial product overlapped, i.e. with successive bitgroups sharing one or more bits being recoded into signed digit representation, e.g. using the Modified Booth Algorithm
    • G06F7/5338Reduction of the number of iteration steps or stages, e.g. using the Booth algorithm, log-sum, odd-even by using multiple bit scanning, i.e. by decoding groups of successive multiplier bits in order to select an appropriate precalculated multiple of the multiplicand as a partial product overlapped, i.e. with successive bitgroups sharing one or more bits being recoded into signed digit representation, e.g. using the Modified Booth Algorithm each bitgroup having two new bits, e.g. 2nd order MBA

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
FR7720935A 1976-07-07 1977-07-07 Dispositif de multiplication des nombres presentes en code complementaire Granted FR2357958A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762379678A SU651341A1 (ru) 1976-07-07 1976-07-07 Устройство дл умножени

Publications (2)

Publication Number Publication Date
FR2357958A1 true FR2357958A1 (fr) 1978-02-03
FR2357958B1 FR2357958B1 (enExample) 1980-03-07

Family

ID=20668226

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720935A Granted FR2357958A1 (fr) 1976-07-07 1977-07-07 Dispositif de multiplication des nombres presentes en code complementaire

Country Status (10)

Country Link
JP (1) JPS5317043A (enExample)
BG (1) BG29702A1 (enExample)
DD (1) DD131420A1 (enExample)
DE (1) DE2730793A1 (enExample)
FR (1) FR2357958A1 (enExample)
GB (1) GB1540945A (enExample)
IN (1) IN147436B (enExample)
PL (1) PL108592B1 (enExample)
RO (1) RO80742A (enExample)
SU (1) SU651341A1 (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334284A (en) * 1979-12-31 1982-06-08 Sperry Corporation Multiplier decoding using parallel MQ register
JPS57141753A (en) * 1981-02-25 1982-09-02 Nec Corp Multiplication circuit

Also Published As

Publication number Publication date
DD131420A1 (de) 1978-06-21
GB1540945A (en) 1979-02-21
FR2357958B1 (enExample) 1980-03-07
RO80742A (ro) 1983-06-01
IN147436B (enExample) 1980-02-23
DE2730793A1 (de) 1978-01-19
PL108592B1 (en) 1980-04-30
BG29702A1 (en) 1981-01-15
SU651341A1 (ru) 1979-03-05
PL199449A1 (pl) 1978-03-28
JPS5317043A (en) 1978-02-16
RO80742B (ro) 1983-05-30

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Legal Events

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ST Notification of lapse