GB1071212A - Improvements in and relating to logic circuits - Google Patents

Improvements in and relating to logic circuits

Info

Publication number
GB1071212A
GB1071212A GB2102564A GB2102564A GB1071212A GB 1071212 A GB1071212 A GB 1071212A GB 2102564 A GB2102564 A GB 2102564A GB 2102564 A GB2102564 A GB 2102564A GB 1071212 A GB1071212 A GB 1071212A
Authority
GB
United Kingdom
Prior art keywords
transistor
state
logic circuits
circuit
relating
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
GB2102564A
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.)
Le Materiel Electrique SW SA
Original Assignee
Le Materiel Electrique SW SA
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 Le Materiel Electrique SW SA filed Critical Le Materiel Electrique SW SA
Publication of GB1071212A publication Critical patent/GB1071212A/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
    • H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
    • H03K19/082—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices using bipolar transistors
    • H03K19/084—Diode-transistor logic

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)
  • Logic Circuits (AREA)

Abstract

1,071,212. Logic circuits. LE MATERIEL ELECTRIQUE S.W. May 21, 1964 [May 30, 1963], No. 21025/64. Heading H3T. A plurality of AND circuits, each consisting of a bias source and diodes connected in the same sense to inputs, is arranged as an OR circuit by joining the outputs through respective resistances directly to the base of a common transistor connected to a bias source, the OR output being taken from the collector. In the Figure, the transistor 4 will conduct if voltage appears at one of the points 11, 12 or 13, which will happen if all the a inputs leading to this point are in state 1. The transistor will be blocked if 11, 12 and 13 are all in state 0, i.e. if at least one a input of each AND circuit is in state 0. An NPN transistor can be used, with reversal of the polarities of the diodes and bias sources. The resistors 5 can be shunted by capacitors.
GB2102564A 1963-05-30 1964-05-21 Improvements in and relating to logic circuits Expired GB1071212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR936513A FR1366186A (en) 1963-05-30 1963-05-30 Logic circuit

Publications (1)

Publication Number Publication Date
GB1071212A true GB1071212A (en) 1967-06-07

Family

ID=8805007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2102564A Expired GB1071212A (en) 1963-05-30 1964-05-21 Improvements in and relating to logic circuits

Country Status (5)

Country Link
BE (1) BE646718A (en)
FR (1) FR1366186A (en)
GB (1) GB1071212A (en)
LU (1) LU45875A1 (en)
NL (1) NL6405812A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1116471A (en) * 1964-09-03 1968-06-06 English Electric Computers Ltd Electric pulse delay and regeneration circuits

Also Published As

Publication number Publication date
LU45875A1 (en) 1964-06-15
FR1366186A (en) 1964-07-10
NL6405812A (en) 1964-12-01
BE646718A (en) 1964-08-17

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