GB852184A - Improvements in electric calculators - Google Patents

Improvements in electric calculators

Info

Publication number
GB852184A
GB852184A GB3626655A GB3626655A GB852184A GB 852184 A GB852184 A GB 852184A GB 3626655 A GB3626655 A GB 3626655A GB 3626655 A GB3626655 A GB 3626655A GB 852184 A GB852184 A GB 852184A
Authority
GB
United Kingdom
Prior art keywords
digit
multiplier
track
sector
pulses
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
GB3626655A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB852184A publication Critical patent/GB852184A/en
Expired legal-status Critical Current

Links

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
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods 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
    • G06F7/50—Adding; Subtracting
    • G06F7/504—Adding; Subtracting in bit-serial fashion, i.e. having a single digit-handling circuit treating all denominations after each other
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/04—Digital computers in general; Data processing equipment in general programmed simultaneously with the introduction of data to be processed, e.g. on the same record carrier
    • 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
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods 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
    • G06F7/491—Computations with decimal numbers radix 12 or 20.
    • G06F7/498—Computations with decimal numbers radix 12 or 20. using counter-type accumulators
    • G06F7/4981—Adding; Subtracting
    • 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
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods 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
    • G06F7/491—Computations with decimal numbers radix 12 or 20.
    • G06F7/498—Computations with decimal numbers radix 12 or 20. using counter-type accumulators
    • G06F7/4983—Multiplying; Dividing
    • G06F7/4985—Multiplying; Dividing by successive additions or subtractions

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Computer Hardware Design (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Digital Magnetic Recording (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
GB3626655A 1956-02-25 1955-12-19 Improvements in electric calculators Expired GB852184A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB593756A GB837196A (en) 1956-02-25 1956-02-25 Improvements in electric calculators

Publications (1)

Publication Number Publication Date
GB852184A true GB852184A (en) 1960-10-26

Family

ID=9805421

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3626655A Expired GB852184A (en) 1956-02-25 1955-12-19 Improvements in electric calculators
GB593756A Expired GB837196A (en) 1956-02-25 1956-02-25 Improvements in electric calculators

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB593756A Expired GB837196A (en) 1956-02-25 1956-02-25 Improvements in electric calculators

Country Status (4)

Country Link
CH (2) CH360229A (de)
DE (3) DE1126653B (de)
FR (2) FR1169586A (de)
GB (2) GB852184A (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL83274C (de) * 1944-12-27
NL75747C (de) * 1945-09-27
US2609143A (en) * 1948-06-24 1952-09-02 George R Stibitz Electronic computer for addition and subtraction
US2702666A (en) * 1949-12-08 1955-02-22 Ibm Multifrequency electronic multiplier
DE1070412B (de) * 1952-10-18 1959-12-03 Ing. C. Olivetti &. C. S.p.A., Ivrea (Italien) Rechenvorrichtung mit dynamischen Registern

Also Published As

Publication number Publication date
CH360229A (de) 1962-02-15
FR1169586A (fr) 1958-12-31
CH360826A (de) 1962-03-15
GB837196A (en) 1960-06-09
DE1096084B (de) 1960-12-29
DE1126653B (de) 1962-03-29
DE1124273B (de) 1962-02-22
FR1172699A (fr) 1959-02-13

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