GB1401204A - Variable function programmed calculator - Google Patents

Variable function programmed calculator

Info

Publication number
GB1401204A
GB1401204A GB3006872A GB3006872A GB1401204A GB 1401204 A GB1401204 A GB 1401204A GB 3006872 A GB3006872 A GB 3006872A GB 3006872 A GB3006872 A GB 3006872A GB 1401204 A GB1401204 A GB 1401204A
Authority
GB
United Kingdom
Prior art keywords
calculator
instructions
keyboard
integrated circuit
address
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
GB3006872A
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.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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
Priority to US16356571A priority Critical
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1401204A publication Critical patent/GB1401204A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00Digital computers in general; Data processing equipment in general
    • G06F15/02Digital 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

Abstract

1401204 Calculator TEXAS INSTRUMENTS Inc 27 June 1972 [19 July 1971] 30068/72 Heading G4A A calculator is formed on a semi-conductor integrated circuit chip and includes addressable read-only program storage, control circuits responsive to program instructions to control operations in the calculator, a memory providing a number of data registers each storing data serially by character parallel by bit, arithmetic means coupled to the data registers and the control circuits, input means, e.g. a keyboard, and an output display. The calculator is formed on a metal-insulatorsemi-conductor integrated circuit and is desorbed in some detail. The output display may be light emitting diodes, liquid crystal devices, cold cathode discharge elements &c., and as described is formed of multisegment digit display elements. The digit display elements and the keyboard are scanned by common timing signals, see Specification 1,401,265. Instruction execution is generally conventional, an instruction address normally being incremented, there being provision for address modification for jump instructions, and for maintaining the same address on "wait" instructions. An exemplary program is given.
GB3006872A 1971-07-19 1972-06-27 Variable function programmed calculator Expired GB1401204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16356571A true 1971-07-19 1971-07-19

Publications (1)

Publication Number Publication Date
GB1401204A true GB1401204A (en) 1975-07-16

Family

ID=22590581

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3006872A Expired GB1401204A (en) 1971-07-19 1972-06-27 Variable function programmed calculator
GB4462674A Expired GB1401265A (en) 1971-07-19 1972-06-27 Variable function programmed calculator

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4462674A Expired GB1401265A (en) 1971-07-19 1972-06-27 Variable function programmed calculator

Country Status (5)

Country Link
JP (4) JPS5732375B1 (en)
DE (2) DE2235430A1 (en)
FR (1) FR2146368B1 (en)
GB (2) GB1401204A (en)
IT (1) IT965091B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5173856A (en) * 1974-11-19 1976-06-26 Texas Instruments Inc Hyojisochito kiiboodo no sosashutsuryokunikanshi tasunokoodokumiawaseojusuru denshikeisanki aruiha deijitarushorikichitsupu
GB2083669B (en) * 1980-09-05 1985-01-03 Casio Computer Co Ltd Key data entry system
JPS5940778U (en) * 1982-09-09 1984-03-15
JPS6270527U (en) * 1985-10-23 1987-05-06
JPH01166884U (en) * 1988-04-28 1989-11-22

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL209920A (en) * 1955-08-26
US2989729A (en) * 1958-12-10 1961-06-20 Burroughs Corp Keyboard checking apparatus
DE1183130B (en) * 1963-09-12 1964-12-10 Telefunken Patent Arrangement for reading and decimal display of a result contained in a multi-decade counter
US3462742A (en) * 1966-12-21 1969-08-19 Rca Corp Computer system adapted to be constructed of large integrated circuit arrays
US3566153A (en) * 1969-04-30 1971-02-23 Texas Instruments Inc Programmable sequential logic

Also Published As

Publication number Publication date
JPH01140264A (en) 1989-06-01
FR2146368A1 (en) 1973-03-02
JPS5731071A (en) 1982-02-19
GB1401265A (en) 1975-07-16
JPS6229832B2 (en) 1987-06-29
FR2146368B1 (en) 1973-07-13
JPS595937B2 (en) 1984-02-08
DE2265696C2 (en) 1984-09-13
JPS5732375B1 (en) 1982-07-10
JPH0241062B2 (en) 1990-09-14
DE2235430A1 (en) 1973-02-01
IT965091B (en) 1974-01-31
JPS5727357A (en) 1982-02-13

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years