GB915774A - Improvements in or relating to electrical pulse-counting devices - Google Patents

Improvements in or relating to electrical pulse-counting devices

Info

Publication number
GB915774A
GB915774A GB2874459A GB2874459A GB915774A GB 915774 A GB915774 A GB 915774A GB 2874459 A GB2874459 A GB 2874459A GB 2874459 A GB2874459 A GB 2874459A GB 915774 A GB915774 A GB 915774A
Authority
GB
United Kingdom
Prior art keywords
gates
relating
aug
modified
electrical pulse
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
GB2874459A
Inventor
John Dawson
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.)
Ericsson Telephones Ltd
Original Assignee
Ericsson Telephones 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
Priority to NL255030D priority Critical patent/NL255030A/xx
Priority to GB871058A priority patent/GB840539A/en
Priority to US797284A priority patent/US3108226A/en
Application filed by Ericsson Telephones Ltd filed Critical Ericsson Telephones Ltd
Priority to GB2874459A priority patent/GB915774A/en
Priority to US50354A priority patent/US3116457A/en
Publication of GB915774A publication Critical patent/GB915774A/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
    • G06F7/491—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
    • H03K21/00—Details of pulse counters or frequency dividers

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)
  • Meter Arrangements (AREA)
  • Analogue/Digital Conversion (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

915,774. Electronic counting-apparatus. ERICSSON TELEPHONES Ltd. Aug. 19, 1960 [Aug. 21, 1959], No. 28744/59. Addition to 840,539. Drawings to Specification. Class 106 (1). The reversible counter described in the parent Specification comprising a plurality of delay devices, one for each denomination, the counter counting separately in binary form, pulses from a plurality of sources differentially related in time, each source having a period T, is modified in that instead of being applied through a series of gates, the input pulses are applied simultaneously to a plurality of gates, one gate corresponding to each possible change in the count, the gates being adapted to control denominational delay devices. In a second embodiment, a modified (monophylic) binary code is employed instead of the pure binary code, thereby reducing the number of interconnections required.
GB2874459A 1958-03-18 1959-08-21 Improvements in or relating to electrical pulse-counting devices Expired GB915774A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL255030D NL255030A (en) 1958-03-18
GB871058A GB840539A (en) 1959-08-21 1958-03-18 Improvements in or relating to electrical pulse-counting devices
US797284A US3108226A (en) 1958-03-18 1959-03-04 Electrical pulse-counting devices
GB2874459A GB915774A (en) 1959-08-21 1959-08-21 Improvements in or relating to electrical pulse-counting devices
US50354A US3116457A (en) 1958-03-18 1960-08-18 Electrical pulse counting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2874459A GB915774A (en) 1959-08-21 1959-08-21 Improvements in or relating to electrical pulse-counting devices

Publications (1)

Publication Number Publication Date
GB915774A true GB915774A (en) 1963-01-16

Family

ID=10280408

Family Applications (2)

Application Number Title Priority Date Filing Date
GB871058A Expired GB840539A (en) 1958-03-18 1958-03-18 Improvements in or relating to electrical pulse-counting devices
GB2874459A Expired GB915774A (en) 1958-03-18 1959-08-21 Improvements in or relating to electrical pulse-counting devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB871058A Expired GB840539A (en) 1958-03-18 1958-03-18 Improvements in or relating to electrical pulse-counting devices

Country Status (1)

Country Link
GB (2) GB840539A (en)

Also Published As

Publication number Publication date
GB840539A (en) 1960-07-06

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