GB1254746A - A logical circuit device - Google Patents

A logical circuit device

Info

Publication number
GB1254746A
GB1254746A GB3258669A GB3258669A GB1254746A GB 1254746 A GB1254746 A GB 1254746A GB 3258669 A GB3258669 A GB 3258669A GB 3258669 A GB3258669 A GB 3258669A GB 1254746 A GB1254746 A GB 1254746A
Authority
GB
United Kingdom
Prior art keywords
transistor
diode
circuit device
logical circuit
emitter
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
GB3258669A
Inventor
Yasoji Suzuki
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB1254746A publication Critical patent/GB1254746A/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
    • H03K19/20—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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Logic Circuits (AREA)

Abstract

1,254,746. Transistor logic circuits. TOKYO SHIBAURA ELECTRIC CO. Ltd. 27 June, 1969 [3 July, 1968], No. 32586/69. Heading H3T. An "exclusive OR" or "PARITY" circuit comprises input terminals for two signals, each connected to the emitter of a corresponding one of two transistors and through a diode to the base of the other. As shown, only when the input signals differ by more than the threshold voltage of a transistor and a diode does a transistor conduct and so cut off output transistor 12. The voltage dropping diode may be replaced by a transistor connected as a diode or by an emitter follower.
GB3258669A 1968-07-03 1969-06-27 A logical circuit device Expired GB1254746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4603468A JPS4918029B1 (en) 1968-07-03 1968-07-03

Publications (1)

Publication Number Publication Date
GB1254746A true GB1254746A (en) 1971-11-24

Family

ID=12735739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3258669A Expired GB1254746A (en) 1968-07-03 1969-06-27 A logical circuit device

Country Status (5)

Country Link
JP (1) JPS4918029B1 (en)
DE (1) DE1933860A1 (en)
FR (1) FR2012225A1 (en)
GB (1) GB1254746A (en)
NL (1) NL6910026A (en)

Also Published As

Publication number Publication date
JPS4918029B1 (en) 1974-05-07
NL6910026A (en) 1970-01-06
FR2012225A1 (en) 1970-03-13
DE1933860A1 (en) 1970-01-15

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