GB887933A - Improvements in or relating to electric logical circuits - Google Patents

Improvements in or relating to electric logical circuits

Info

Publication number
GB887933A
GB887933A GB2587658A GB2587658A GB887933A GB 887933 A GB887933 A GB 887933A GB 2587658 A GB2587658 A GB 2587658A GB 2587658 A GB2587658 A GB 2587658A GB 887933 A GB887933 A GB 887933A
Authority
GB
United Kingdom
Prior art keywords
logical circuits
relating
electric logical
electric
mullard
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
GB2587658A
Inventor
Leonard Peter Morgan
John Anthony Weaver
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB2587658A priority Critical patent/GB887933A/en
Priority to CH7675259A priority patent/CH376148A/en
Priority to DEN17074A priority patent/DE1090264B/en
Priority to CH7675159A priority patent/CH381278A/en
Priority to FR802563A priority patent/FR1232185A/en
Publication of GB887933A publication Critical patent/GB887933A/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
    • H03K19/09—Resistor-transistor logic
    • 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
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
    • H03K19/21—EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one input; COINCIDENCE circuits, i.e. giving output only if all input signals are identical
    • H03K19/212—EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one input; COINCIDENCE circuits, i.e. giving output only if all input signals are identical using bipolar transistors

Abstract

887,933. Transistor logical circuits. MULLARD Ltd. May 29, 1959 [Aug. 12, 1958], No. 25876/58. Class 40(6). An "exclusive or" circuit comprises, as shown, a pair of transistors T1, T2 with emitters and bases D.C. cross-coupled, and connections through resistors R3 and R4 to a reference point, so that current will flow in the common collector circuit only when the input signals applied from the switches represent a "1" and a "0". Specification 773,962 is referred to.
GB2587658A 1958-08-12 1958-08-12 Improvements in or relating to electric logical circuits Expired GB887933A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB2587658A GB887933A (en) 1958-08-12 1958-08-12 Improvements in or relating to electric logical circuits
CH7675259A CH376148A (en) 1958-08-12 1959-08-08 Binary half-counters and use of the same to build binary full-counters
DEN17074A DE1090264B (en) 1958-08-12 1959-08-08 Exclusive OR gate with two input terminals, one output terminal and two transistors of the same line type
CH7675159A CH381278A (en) 1958-08-12 1959-08-08 Exclusive OR gate
FR802563A FR1232185A (en) 1958-08-12 1959-08-11 Electronic door or the like of the so-called or exclusive kind

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2587658A GB887933A (en) 1958-08-12 1958-08-12 Improvements in or relating to electric logical circuits

Publications (1)

Publication Number Publication Date
GB887933A true GB887933A (en) 1962-01-24

Family

ID=10234814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2587658A Expired GB887933A (en) 1958-08-12 1958-08-12 Improvements in or relating to electric logical circuits

Country Status (4)

Country Link
CH (1) CH381278A (en)
DE (1) DE1090264B (en)
FR (1) FR1232185A (en)
GB (1) GB887933A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179589B (en) * 1962-01-05 1964-10-15 Philips Nv Exclusive or circuit
US3248568A (en) * 1963-03-14 1966-04-26 Ibm Tunnel diode level shift gate data storage device
US3218478A (en) * 1963-02-28 1965-11-16 Sperry Rand Corp Signal responsive apparatus
US3510681A (en) * 1966-12-23 1970-05-05 Rca Corp Current steering networks providing the exclusive or function

Also Published As

Publication number Publication date
DE1090264B (en) 1960-10-06
FR1232185A (en) 1960-10-06
CH381278A (en) 1964-08-31

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