GB696222A - Improvements in or relating to electrical circuits - Google Patents

Improvements in or relating to electrical circuits

Info

Publication number
GB696222A
GB696222A GB1961250A GB1961250A GB696222A GB 696222 A GB696222 A GB 696222A GB 1961250 A GB1961250 A GB 1961250A GB 1961250 A GB1961250 A GB 1961250A GB 696222 A GB696222 A GB 696222A
Authority
GB
United Kingdom
Prior art keywords
output
pulse
generators
negative
coincidence
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
GB1961250A
Inventor
Henry George Carpenter
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.)
Allard Way Holdings Ltd
Original Assignee
Elliott Brothers London 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 Elliott Brothers London Ltd filed Critical Elliott Brothers London Ltd
Priority to GB1961250A priority Critical patent/GB696222A/en
Publication of GB696222A publication Critical patent/GB696222A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
    • H03K19/12—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using diode rectifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

696,222. Digital electric calculating apparatus. ELLIOTT BROS. (LONDON), Ltd. Aug. 3, 1951 [Aug. 4, 1950], No. 19612/50. Class 106 (i). [Also in Group XL (c)] The Figure shows a coincidence and anticoincidence circuit for a digital computer in which an output pulse is produced at the coincidence output " C when pulses from generators A and B are present simultaneously and an output pulse is produced at the " anticoincidence output " A/C when a pulse is present at only one of the generators A or B. The pulse generators A and B have each a low output impedance which may comprise an output transformer and D.C. restoring circuit as described in Specification 693,116, [Group XL (c)]. When the pulse generators A and B produce a pulse simultaneously the positivegoing terminals of the generators move in a positive direction so that diodes V3, V4 conduct but as load resistor R has a low impedance only a small voltage pulse appears at J. The negative-going terminals of generators A and B will also move in a negative direction and a negative output pulse will be produced at the high impedance load at " coincidence output " C. Thus an output pulse appears only at the " coincidence output " terminal C. When only one generator, say A, produces an output pulse, the negative terminal of that generator will be prevented from moving in a negative direction by the low impedance to earth via generator B, the positive-going terminal of which is prevented from moving negative to earth by its associated diode V2. Thus a positive pulse will be produced at the " anti-coincidence output " A/C.
GB1961250A 1950-08-04 1950-08-04 Improvements in or relating to electrical circuits Expired GB696222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1961250A GB696222A (en) 1950-08-04 1950-08-04 Improvements in or relating to electrical circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1961250A GB696222A (en) 1950-08-04 1950-08-04 Improvements in or relating to electrical circuits

Publications (1)

Publication Number Publication Date
GB696222A true GB696222A (en) 1953-08-26

Family

ID=10132265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1961250A Expired GB696222A (en) 1950-08-04 1950-08-04 Improvements in or relating to electrical circuits

Country Status (1)

Country Link
GB (1) GB696222A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850647A (en) * 1954-12-29 1958-09-02 Ibm "exclusive or" logical circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850647A (en) * 1954-12-29 1958-09-02 Ibm "exclusive or" logical circuits

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