GB577195A - Improvements in or relating to calculating machines - Google Patents

Improvements in or relating to calculating machines

Info

Publication number
GB577195A
GB577195A GB5841/44A GB584144A GB577195A GB 577195 A GB577195 A GB 577195A GB 5841/44 A GB5841/44 A GB 5841/44A GB 584144 A GB584144 A GB 584144A GB 577195 A GB577195 A GB 577195A
Authority
GB
United Kingdom
Prior art keywords
contacts
relays
relay
product
keys
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
GB5841/44A
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.)
British Tabulating Machine Co Ltd
Original Assignee
British Tabulating Machine Co Ltd
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 British Tabulating Machine Co Ltd filed Critical British Tabulating Machine Co Ltd
Publication of GB577195A publication Critical patent/GB577195A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F7/46—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using electromechanical counter-type accumulators
    • G06F7/468—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using electromechanical counter-type accumulators for evaluating functions by calculation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F7/40—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using contact-making devices, e.g. electromagnetic relay
    • G06F7/44—Multiplying; Dividing
    • G06F7/446—Multiplying; Dividing by partial product forming (with electric multiplication table)

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Computing Systems (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Keying Circuit Devices (AREA)
  • Input From Keyboards Or The Like (AREA)
GB5841/44A 1943-03-30 1944-03-29 Improvements in or relating to calculating machines Expired GB577195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481075A US2394924A (en) 1943-03-30 1943-03-30 Electric calculating machine

Publications (1)

Publication Number Publication Date
GB577195A true GB577195A (en) 1946-05-08

Family

ID=23910481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5841/44A Expired GB577195A (en) 1943-03-30 1944-03-29 Improvements in or relating to calculating machines

Country Status (5)

Country Link
US (1) US2394924A (enrdf_load_stackoverflow)
DE (1) DE931502C (enrdf_load_stackoverflow)
FR (1) FR942833A (enrdf_load_stackoverflow)
GB (1) GB577195A (enrdf_load_stackoverflow)
NL (1) NL78641C (enrdf_load_stackoverflow)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736494A (en) * 1956-02-28 Square root calculating machine
US2736493A (en) * 1956-02-28 C ellerbeck
DE1001510B (de) * 1945-12-21 1957-01-24 IBM Deutschland Internationale Büro - Maschinen Gesellschaft mbH, Smdelfingen (Wurtt) Lochkartengesteuerte Multipliziermaschine
US2574283A (en) * 1946-03-27 1951-11-06 John T Potter Predetermined electronic counter
US2493862A (en) * 1946-10-03 1950-01-10 Ibm Dividing machine
US2817477A (en) * 1947-03-14 1957-12-24 Bell Telephone Labor Inc Electronic computer
US2620974A (en) * 1947-03-31 1952-12-09 Raymond L A Valtat Binary network type calculating machine
US2560172A (en) * 1948-03-31 1951-07-10 Automatic Elect Lab Binary binomial sequential analyzer
US2703201A (en) * 1949-03-24 1955-03-01 Ibm Electronic divider
US2829822A (en) * 1949-10-24 1958-04-08 Marchant Calculators Inc Binary value calculator
NL162922B (nl) * 1950-08-16 Montedison Spa Werkwijze om een katalysator te bereiden voor de polymerisatie van alkenen-1.
US2876687A (en) * 1951-06-26 1959-03-10 Graphic Arts Res Foundation In Type composing apparatus
DE1039767B (de) * 1953-03-10 1958-09-25 Grundig Max Elektrischer Produktbildner
BE529142A (enrdf_load_stackoverflow) * 1953-05-28
US2829827A (en) * 1954-03-01 1958-04-08 Ibm Electronic multiplying machine
US2855147A (en) * 1954-11-12 1958-10-07 Phillips Petroleum Co Polynomial multiplier
NL202098A (enrdf_load_stackoverflow) * 1954-11-23
US2921738A (en) * 1955-04-18 1960-01-19 Phillips Petroleum Co Polynomial multiplier
US2961160A (en) * 1956-05-28 1960-11-22 Toledo Scale Corp Electronic multiplier
GB819365A (en) * 1956-05-12 1959-09-02 Emi Ltd Improvements relating to apparatus for multiplying binary numbers
US2934268A (en) * 1956-05-28 1960-04-26 Bell Telephone Labor Inc Square root computer
US3023961A (en) * 1957-05-23 1962-03-06 Thompson Ramo Wooldridge Inc Apparatus for performing high speed division
DE1119021B (de) * 1958-06-04 1961-12-07 Zuse K G Rechenvorrichtung zum Multiplizieren von Zahlen
NL263156A (enrdf_load_stackoverflow) * 1960-04-05

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE664012C (de) * 1931-09-12 1938-08-20 Raymond Louis Andre Valtat Rechenmaschine

Also Published As

Publication number Publication date
US2394924A (en) 1946-02-12
FR942833A (fr) 1949-02-18
DE931502C (de) 1955-09-22
NL78641C (enrdf_load_stackoverflow)

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