GB1217502A - Improvements in or relating to logic circuits - Google Patents

Improvements in or relating to logic circuits

Info

Publication number
GB1217502A
GB1217502A GB257767A GB257767A GB1217502A GB 1217502 A GB1217502 A GB 1217502A GB 257767 A GB257767 A GB 257767A GB 257767 A GB257767 A GB 257767A GB 1217502 A GB1217502 A GB 1217502A
Authority
GB
United Kingdom
Prior art keywords
stable
circuits
jan
clock pulses
states
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
GB257767A
Inventor
Peter Robert Horne
John Stephen Brothers
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB257767A priority Critical patent/GB1217502A/en
Publication of GB1217502A publication Critical patent/GB1217502A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/289—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable of the master-slave type
    • 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
    • H03K19/086—Emitter coupled logic
    • H03K19/0866—Stacked emitter coupled logic
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/002—Pulse counters comprising counting chains; Frequency dividers comprising counting chains using semiconductor devices

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

1,217,502. Bi-stable circuits. PLESSEY CO. Ltd. 17 Jan., 1968 [18 Jan., 1967], No. 2577/67. Heading H3T. [Also in Division G4] A logic circuit comprises two tiers and two ranks and is driven by out-of-phase clock pulses to two inputs to adopt four stable conditions sequentially. True and inverse clock pulses CP, CP are applied to VT21, VT22 to control transistor circuits VT5, VT6 and VT15, VT16 which constitute the lower tier, and VT1-VT4, VT7, VT8, VT11-VT14, VT17, VT18 constituting the upper tier. The lefthand of two like bi-stable circuits comprises crosscoupled pair VT1, VT2 with level-shifting coupling transistors VT3, VT4. Switching is dependent on a long-tailed pair VT5, VT6 and gating transistors VT7, VT8 controlled by the state of the right-hand bi-stable element via leads D 2 <SP>1</SP>, #D 2 1. If the potentials on leads D 1 , D 1 , D 2 , D 2 initially correspond to logic states 0101 then four successive pulses CP, CP, CP, CP change the states to 1001, 1010, 0110, 0101. Outputs can be taken from either bi-stable element to a similar circuit forming the next stage of a binary counter.
GB257767A 1967-01-18 1967-01-18 Improvements in or relating to logic circuits Expired GB1217502A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB257767A GB1217502A (en) 1967-01-18 1967-01-18 Improvements in or relating to logic circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB257767A GB1217502A (en) 1967-01-18 1967-01-18 Improvements in or relating to logic circuits

Publications (1)

Publication Number Publication Date
GB1217502A true GB1217502A (en) 1970-12-31

Family

ID=9742025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB257767A Expired GB1217502A (en) 1967-01-18 1967-01-18 Improvements in or relating to logic circuits

Country Status (1)

Country Link
GB (1) GB1217502A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444757A1 (en) * 1983-12-09 1985-06-13 Plessey Overseas Ltd., Ilford, Essex FM DEMODULATION ARRANGEMENT
FR2556524A1 (en) * 1983-12-09 1985-06-14 Plessey Overseas CIRCUIT FOR SUPPRESSING AMPLITUDE VARIATIONS IN MODULATED FREQUENCY SIGNALS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444757A1 (en) * 1983-12-09 1985-06-13 Plessey Overseas Ltd., Ilford, Essex FM DEMODULATION ARRANGEMENT
FR2556524A1 (en) * 1983-12-09 1985-06-14 Plessey Overseas CIRCUIT FOR SUPPRESSING AMPLITUDE VARIATIONS IN MODULATED FREQUENCY SIGNALS

Similar Documents

Publication Publication Date Title
GB1402918A (en) Memory system
GB1122411A (en) Data storage circuit
US3067336A (en) Bistable electronic switching circuitry for manipulating digital data
GB1198084A (en) Information Control System
GB1217502A (en) Improvements in or relating to logic circuits
GB1254537A (en) Digital computer apparatus
GB1573663A (en) Method for manipulating digital signals on ordered data bus lines
GB1275295A (en) An integrated flip-flop circuit
GB957203A (en) Transistor signal storage and transfer circuits
GB1461443A (en) Bistable multivibrator circuit
GB1452306A (en) Asynchronous multi-stable state circuit
GB986148A (en) Synchronized signal pulse circuit
GB1338958A (en) Operation of field-effect transistor circuits having substantial distributed capacitance in a memory system
US3593032A (en) Mosfet static shift register
GB1435347A (en) Digital shift register
GB1426191A (en) Digital circuits
GB1419271A (en) Blanking circuits
US3509366A (en) Data polarity latching system
GB935176A (en) Memory updating
GB1341016A (en) D-type bistable circuits
US3165719A (en) Matrix of coincidence gates having column and row selection
GB1139628A (en) Clocked delay type flip flop
ES365679A1 (en) Jk-flip-flop
GB959390A (en) Data latching circuits
GB1220088A (en) Improvements in or relating to digital computing and information processing machine and system