GB908555A - Improvements in and relating to binary counters - Google Patents

Improvements in and relating to binary counters

Info

Publication number
GB908555A
GB908555A GB1828561A GB1828561A GB908555A GB 908555 A GB908555 A GB 908555A GB 1828561 A GB1828561 A GB 1828561A GB 1828561 A GB1828561 A GB 1828561A GB 908555 A GB908555 A GB 908555A
Authority
GB
United Kingdom
Prior art keywords
stage
gates
read
lowest
register
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
GB1828561A
Inventor
William Nicholas Carroll
Antonio Renato Anthony D
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 US861027A priority Critical patent/US3022945A/en
Priority to FR861539A priority patent/FR1289170A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to GB1828561A priority patent/GB908555A/en
Publication of GB908555A publication Critical patent/GB908555A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K21/00Details of pulse counters or frequency dividers

Landscapes

  • Manipulation Of Pulses (AREA)

Abstract

908,555. Electric selective signalling systems. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 19, 1961, No. 18285/61. Class 40 (1). [Also in Group XIX] The storage register of a binary counter is so controlled by logic circuits that in response to stepping pulses it stores odd numbers in true form and even numbers in complement form except for the lowest stage. The register controls further logic circuits so that read-out is always effected in true form. The register comprises flip-flops 10-18 and a lowest stage 44. A clear pulse sets all the flipflops to 1 except the lowest which is set to 0. In counting pulses on line 50, according to whether stage 44 is at 1 or 0 so gate 46 or 48 opens. With stage 44 at 1, a stepping pulse reverses 44 and samples gates 26-34. Any of these gates which is open because the corresponding stage is at 0 sends a pulse to all the OR gates 36-42 of higher denomination to effect complementing. If stage 44 is at 0, all the OR gates 36-42 are effective to effect complementing at the same time as 44 changes to 1. Read-out. The 1 and 0 outputs of the register flip-flops feed gates 56-64 and 66-74 respectively. One or other set is opened by gate 88 or 90, at read-out, according to whether flip-flop 44 of the lowest denomination registers 1 or 0. The read-out on leads 2<SP>5</SP>-2<SP>0</SP> is therefore in true form.
GB1828561A 1959-12-21 1961-05-19 Improvements in and relating to binary counters Expired GB908555A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US861027A US3022945A (en) 1959-12-21 1959-12-21 High speed counter
FR861539A FR1289170A (en) 1961-05-12 1961-05-12 Ultra-fast running counter
GB1828561A GB908555A (en) 1961-05-19 1961-05-19 Improvements in and relating to binary counters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1828561A GB908555A (en) 1961-05-19 1961-05-19 Improvements in and relating to binary counters

Publications (1)

Publication Number Publication Date
GB908555A true GB908555A (en) 1962-10-17

Family

ID=10109839

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1828561A Expired GB908555A (en) 1959-12-21 1961-05-19 Improvements in and relating to binary counters

Country Status (1)

Country Link
GB (1) GB908555A (en)

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