GB1197291A - Calculator - Google Patents

Calculator

Info

Publication number
GB1197291A
GB1197291A GB28709/67A GB2870967A GB1197291A GB 1197291 A GB1197291 A GB 1197291A GB 28709/67 A GB28709/67 A GB 28709/67A GB 2870967 A GB2870967 A GB 2870967A GB 1197291 A GB1197291 A GB 1197291A
Authority
GB
United Kingdom
Prior art keywords
flip
states
instruction
calculator
flops
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
GB28709/67A
Inventor
Thomas E Osborne
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Priority to GB46629/69A priority Critical patent/GB1197292A/en
Publication of GB1197291A publication Critical patent/GB1197291A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • 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)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Computing Systems (AREA)
  • Nonlinear Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Mathematical Physics (AREA)
  • Design And Manufacture Of Integrated Circuits (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Calculators And Similar Devices (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Electronic Switches (AREA)
  • Power Sources (AREA)
  • Storage Device Security (AREA)
  • Logic Circuits (AREA)

Abstract

1,197,291. Digital calculators. HEWLETTPACKARD CO. 21 June, 1967 [23 June, 1966], No. 28709/67. Heading G4A. In an electronic calculator, control apparatus normally regularly actuates instruction apparatus to give and direct execution of groups of one or more instructions (microinstructions), each group being normally given and executed during a different one of normally regularly recurring clock time intervals, at least some groups including a selected instruction. e.g. memory access, which must be executed after or requires a longer time interval to execute than other instruction(s) of the same group, the control apparatus being responsive to such a selected instruction for itself directing its execution and delaying the normally regular actuation of the instruction apparatus until the selected instruction is executed. Input.-All input is from a keyboard having keys for the digits 0-9 and for various operations. The identity of a key pressed is specified by a signal on one of two lines (meaning digit and operation respectively) together with a binary number from a diode matrix. A further signal is produced when any key is pressed, to cause the calculator to exit from a display subroutine and deal with the new input. Output.-A cathode-ray tube displays the contents of a keyboard register and an answer register. Programme sequencing (see also first paragraph above).-The states of flip-flops are decoded to select a microprogramme subroutine and a stage within it by driving a selected sub-routine drive line and a selected instruction drive line, the decoders being disabled during memory access. The drivers do not carry current except when in use, thus reducing power consumption. Memory.-The magnetic core memory holds six 13-character words and is addressable by character. Jump. -When a microprogramme sub-routine is left before completion to perform a common microprogramme sub-routine, i.e. one used during the execution of more than one macroinstruction, a so-called transfer vector is stored. On exit from the common sub-routine, the transfer vector (which has n bits if the number of possible transfer vectors is 2<SP>n</SP> or between 2<SP>n</SP> and 2<SP>n-1</SP>) is retrieved and expanded into an address to transfer control to. Tester.-A tester unit can be plugged into the machine and displays the states of most of the flip-flops of the calculator on lamps. It includes a conditional halt switch to cause the calculator to stop at a particular combination of states of these flip-flops, the desired states being set up on manual switches (one per flip-flop) each having 3 positions meaning 1, 0 and don't care respectively. A dump switch is also provided to cause the flip-flops to take up states specified by further 3-position manual switches (one per flip-flop), the 3 positions meaning set to 1, set to 0 and leave alone respectively. Single-step, halt, read and store switches are also provided.
GB28709/67A 1966-06-23 1967-06-21 Calculator Expired GB1197291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB46629/69A GB1197292A (en) 1966-06-23 1967-06-21 Calculator

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1197291A true GB1197291A (en) 1970-07-01

Family

ID=24235467

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28709/67A Expired GB1197291A (en) 1966-06-23 1967-06-21 Calculator

Country Status (6)

Country Link
US (1) US3566160A (en)
JP (1) JPS544218B1 (en)
CA (1) CA919305A (en)
DE (5) DE1549455A1 (en)
FR (1) FR1529144A (en)
GB (1) GB1197291A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130765A (en) * 1982-11-20 1984-06-06 Rau Swf Autozubehoer Computer, especially for a motor vehicle

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
DE2202658C2 (en) * 1972-01-20 1985-05-15 Allen Organ Co., 18062 Macungie, Pa. Electronic keyboard musical instrument - has switching matrix on keyboard output controlling TDM generation and control of output tones
DE2814124A1 (en) * 1978-04-01 1979-10-11 Bosch Gmbh Robert DEVICE FOR DATA ENTRY INTO MICROPROCESSORS
DE2815234A1 (en) * 1978-04-08 1979-10-18 Bosch Gmbh Robert Microprocessor data input switching circuit - uses interrogated switch groups connectable to multiple channel data bus
DE2839359A1 (en) * 1978-09-09 1980-03-27 Licentia Gmbh Diode coding matrix for one-out-of-n code - forms binary code using two sets of switches and reduced number of diodes
DE2911998C2 (en) * 1979-03-27 1985-11-07 Robert Bosch Gmbh, 7000 Stuttgart Power supply for a microprocessor that controls electrical devices, in particular a motor vehicle
US4644352A (en) * 1984-03-30 1987-02-17 Casio Computer Co., Ltd. Radio wave data transmission watch device
DE3444253A1 (en) * 1984-12-05 1986-06-05 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Operating device for data systems
JPS621265U (en) * 1985-06-17 1987-01-07

Family Cites Families (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
GB2130765A (en) * 1982-11-20 1984-06-06 Rau Swf Autozubehoer Computer, especially for a motor vehicle

Also Published As

Publication number Publication date
DE1774988A1 (en) 1973-07-05
DE1774988B2 (en) 1978-09-14
US3566160A (en) 1971-02-23
DE1774987C3 (en) 1975-02-13
DE1774987A1 (en) 1973-07-05
DE1774987B2 (en) 1974-06-27
DE1799012B1 (en) 1981-01-29
DE1799012C3 (en) 1981-10-15
DE1774986B2 (en) 1974-06-12
DE1774986C3 (en) 1975-02-06
FR1529144A (en) 1968-06-14
DE1774986A1 (en) 1973-08-09
CA919305A (en) 1973-01-16
DE1774988C3 (en) 1979-05-03
DE1549455A1 (en) 1971-02-18
JPS544218B1 (en) 1979-03-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years