US3566160A - Simplified race-preventing flip-flop having a selectable noise immunity threshold - Google Patents

Simplified race-preventing flip-flop having a selectable noise immunity threshold Download PDF

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Publication number
US3566160A
US3566160A US559887A US3566160DA US3566160A US 3566160 A US3566160 A US 3566160A US 559887 A US559887 A US 559887A US 3566160D A US3566160D A US 3566160DA US 3566160 A US3566160 A US 3566160A
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United States
Prior art keywords
input
transistor
conduction path
current conduction
charge storage
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Expired - Lifetime
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US559887A
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English (en)
Inventor
Thomas E Osborne
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HP Inc
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Hewlett Packard Co
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/22—Static coding
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3185—Reconfiguring for testing, e.g. LSSD, partitioning
    • G01R31/318522—Test of Sequential circuits
    • G01R31/318525—Test of flip-flops or latches
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26—Functional testing
    • G06F11/273—Tester hardware, i.e. output processing circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/30—Monitoring
    • G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
    • G06F11/324—Display of status information
    • G06F11/325—Display of status information by lamps or LED's
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/36—Preventing errors by testing or debugging software
    • G06F11/362—Software debugging
    • G06F11/3648—Software debugging using additional hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0227—Cooperation and interconnection of the input arrangement with other functional units of a computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/153—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using cathode-ray tubes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/32—Address formation of the next instruction, e.g. by incrementing the instruction counter
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4482—Procedural
    • G06F9/4484—Executing subprograms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4482—Procedural
    • G06F9/4484—Executing subprograms
    • G06F9/4486—Formation of subprogram jump address
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/14—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible
    • G09G1/18—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible a small local pattern covering only a single character, and stepping to a position for the following character, e.g. in rectangular or polar co-ordinates, or in the form of a framed star
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • First and second transistors are arranged as a flip-flop in which the base of each transistor is connected by a separate resistor to the collector of the other transistor, the collector of each transistor is connected by a separate resistor to a source of supply voltage, and the emitter of each transistor is connected to a source of reference voltage.
  • a first input drive circuit is connected to the base of the first transistor.
  • This input drive circuit includes a capacitorand a resistor serially connected between the base of the first transistor and the source of supply voltage. It also includes an input transistor having its collector connected by the capacitor to the base of the first transistor, its base connected by a diode to the collector of the first transistor, and its emitter connected to a source of adjustable voltage having a value intermediate to the values of the supply and reference voltages.
  • a second input drive circuit of the same type as the first is similarly connected to the base of the second transistor. See FIGS. 29 and 29' and under the heading FLIP-F LOP DRIVER AND GATING. Such flip-flops are employed in the internal control and subroutine logic of a calculator.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Computing Systems (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Optics & Photonics (AREA)
  • Remote Sensing (AREA)
  • Power Engineering (AREA)
  • Mathematical Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Design And Manufacture Of Integrated Circuits (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Electronic Switches (AREA)
  • Calculators And Similar Devices (AREA)
  • Logic Circuits (AREA)
  • Storage Device Security (AREA)
  • Power Sources (AREA)
US559887A 1966-06-23 1966-06-23 Simplified race-preventing flip-flop having a selectable noise immunity threshold Expired - Lifetime US3566160A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55988766A 1966-06-23 1966-06-23

Publications (1)

Publication Number Publication Date
US3566160A true US3566160A (en) 1971-02-23

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Application Number Title Priority Date Filing Date
US559887A Expired - Lifetime US3566160A (en) 1966-06-23 1966-06-23 Simplified race-preventing flip-flop having a selectable noise immunity threshold

Country Status (6)

Country Link
US (1) US3566160A (ja)
JP (1) JPS544218B1 (ja)
CA (1) CA919305A (ja)
DE (5) DE1799012C3 (ja)
FR (1) FR1529144A (ja)
GB (1) GB1197291A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2202658A1 (de) * 1972-01-20 1973-07-26 North American Rockwell Elektronisches musikinstrument

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3631403A (en) * 1969-09-08 1971-12-28 Singer Co Retail sales transaction terminal
DE2814124A1 (de) * 1978-04-01 1979-10-11 Bosch Gmbh Robert Einrichtung zur dateneingabe in mikroprozessoren
DE2815234A1 (de) * 1978-04-08 1979-10-18 Bosch Gmbh Robert Schaltungsanordnung zur eingabe von informationen in eine mikroprozessorschaltung
DE2839359A1 (de) * 1978-09-09 1980-03-27 Licentia Gmbh Codiermatrix zum codieren von 1-aus- n-code in einen binaeren code
DE2911998C2 (de) * 1979-03-27 1985-11-07 Robert Bosch Gmbh, 7000 Stuttgart Stromversorgung für einen Mikroprozessor, der elektrische Einrichtungen, insbesondere eines Kraftfahrzeuges steuert
DE3242952A1 (de) * 1982-11-20 1984-05-24 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Rechner, insbesondere bordrechner fuer kraftfahrzeuge
US4644352A (en) * 1984-03-30 1987-02-17 Casio Computer Co., Ltd. Radio wave data transmission watch device
DE3444253A1 (de) * 1984-12-05 1986-06-05 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Bedienungseinrichtung fuer datensysteme
JPS621265U (ja) * 1985-06-17 1987-01-07

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045128A (en) * 1958-07-01 1962-07-17 Ibm Bistable multivibrator
US3046413A (en) * 1960-12-16 1962-07-24 Ibm Transistor multiple count trigger with stepwave generator gates
US3100848A (en) * 1959-06-25 1963-08-13 Ibm High speed multivibrator having cross coupling circuitry
US3102208A (en) * 1960-02-17 1963-08-27 Honeywell Regulator Co Race-preventing flip-flop switches by trailing edge of clock pulse applied through charged series capacitor
US3294980A (en) * 1963-02-27 1966-12-27 Pacific Ind Inc High speed binary
US3334249A (en) * 1965-03-05 1967-08-01 Digital Equipment Corp Diode-capacitor gate having additional shunting capacitor reducing recovery time
US3351778A (en) * 1964-10-08 1967-11-07 Motorola Inc Trailing edge j-k flip-flop
US3369130A (en) * 1966-08-31 1968-02-13 Indiana Instr Inc Gating circuit for setting, resetting, and changing the state of a transistor flip-flop for voltage level input changes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045128A (en) * 1958-07-01 1962-07-17 Ibm Bistable multivibrator
US3100848A (en) * 1959-06-25 1963-08-13 Ibm High speed multivibrator having cross coupling circuitry
US3102208A (en) * 1960-02-17 1963-08-27 Honeywell Regulator Co Race-preventing flip-flop switches by trailing edge of clock pulse applied through charged series capacitor
US3046413A (en) * 1960-12-16 1962-07-24 Ibm Transistor multiple count trigger with stepwave generator gates
US3294980A (en) * 1963-02-27 1966-12-27 Pacific Ind Inc High speed binary
US3351778A (en) * 1964-10-08 1967-11-07 Motorola Inc Trailing edge j-k flip-flop
US3334249A (en) * 1965-03-05 1967-08-01 Digital Equipment Corp Diode-capacitor gate having additional shunting capacitor reducing recovery time
US3369130A (en) * 1966-08-31 1968-02-13 Indiana Instr Inc Gating circuit for setting, resetting, and changing the state of a transistor flip-flop for voltage level input changes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2202658A1 (de) * 1972-01-20 1973-07-26 North American Rockwell Elektronisches musikinstrument

Also Published As

Publication number Publication date
DE1549455A1 (de) 1971-02-18
DE1799012B1 (de) 1981-01-29
DE1774987A1 (de) 1973-07-05
DE1774988A1 (de) 1973-07-05
DE1799012C3 (de) 1981-10-15
DE1774988C3 (de) 1979-05-03
DE1774987C3 (de) 1975-02-13
FR1529144A (fr) 1968-06-14
DE1774986A1 (de) 1973-08-09
JPS544218B1 (ja) 1979-03-03
DE1774987B2 (de) 1974-06-27
DE1774986B2 (de) 1974-06-12
DE1774988B2 (de) 1978-09-14
GB1197291A (en) 1970-07-01
CA919305A (en) 1973-01-16
DE1774986C3 (ja) 1975-02-06

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