GB1540945A - Apparatus for multiplying numbers - Google Patents

Apparatus for multiplying numbers

Info

Publication number
GB1540945A
GB1540945A GB2860577A GB2860577A GB1540945A GB 1540945 A GB1540945 A GB 1540945A GB 2860577 A GB2860577 A GB 2860577A GB 2860577 A GB2860577 A GB 2860577A GB 1540945 A GB1540945 A GB 1540945A
Authority
GB
United Kingdom
Prior art keywords
multiplying numbers
multiplying
numbers
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.)
Expired
Application number
GB2860577A
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 GB1540945A publication Critical patent/GB1540945A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR 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)
GB2860577A 1976-07-07 1977-07-07 Apparatus for multiplying numbers Expired GB1540945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762379678A SU651341A1 (en) 1976-07-07 1976-07-07 Multiplying arrangement

Publications (1)

Publication Number Publication Date
GB1540945A true GB1540945A (en) 1979-02-21

Family

ID=20668226

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2860577A Expired GB1540945A (en) 1976-07-07 1977-07-07 Apparatus for multiplying numbers

Country Status (10)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058997A1 (en) * 1981-02-25 1982-09-01 Nec Corporation Digital processing circuit having a multiplication function

Families Citing this family (1)

* 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058997A1 (en) * 1981-02-25 1982-09-01 Nec Corporation Digital processing circuit having a multiplication function

Also Published As

Publication number Publication date
RO80742B (en) 1983-05-30
DD131420A1 (en) 1978-06-21
JPS5317043A (en) 1978-02-16
RO80742A (en) 1983-06-01
DE2730793A1 (en) 1978-01-19
PL199449A1 (en) 1978-03-28
IN147436B (en) 1980-02-23
FR2357958A1 (en) 1978-02-03
PL108592B1 (en) 1980-04-30
FR2357958B1 (en) 1980-03-07
SU651341A1 (en) 1979-03-05
BG29702A1 (en) 1981-01-15

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee