GB665612A - Improvements in or relating to calculating machines - Google Patents

Improvements in or relating to calculating machines

Info

Publication number
GB665612A
GB665612A GB20977/48A GB2097748A GB665612A GB 665612 A GB665612 A GB 665612A GB 20977/48 A GB20977/48 A GB 20977/48A GB 2097748 A GB2097748 A GB 2097748A GB 665612 A GB665612 A GB 665612A
Authority
GB
United Kingdom
Prior art keywords
circuit
pentode
triode
point
line
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
GB20977/48A
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 GB665612A publication Critical patent/GB665612A/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
    • G06F7/48—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/82—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using gas-filled tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Analysis (AREA)
  • Particle Accelerators (AREA)
  • Feedback Control In General (AREA)
  • X-Ray Techniques (AREA)
GB20977/48A 1947-08-13 1948-08-09 Improvements in or relating to calculating machines Expired GB665612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US665612XA 1947-08-13 1947-08-13

Publications (1)

Publication Number Publication Date
GB665612A true GB665612A (en) 1952-01-30

Family

ID=22070275

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20977/48A Expired GB665612A (en) 1947-08-13 1948-08-09 Improvements in or relating to calculating machines

Country Status (5)

Country Link
BE (1) BE484109A (enrdf_load_stackoverflow)
DE (1) DE909506C (enrdf_load_stackoverflow)
FR (1) FR1057762A (enrdf_load_stackoverflow)
GB (1) GB665612A (enrdf_load_stackoverflow)
NL (2) NL76587C (enrdf_load_stackoverflow)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2442428A (en) * 1943-12-27 1948-06-01 Ncr Co Calculating device

Also Published As

Publication number Publication date
NL76587C (enrdf_load_stackoverflow)
BE484109A (enrdf_load_stackoverflow)
FR1057762A (enrdf_load_stackoverflow) 1954-03-10
NL141868B (nl)
DE909506C (de) 1954-04-22

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