GB1432421A - Electronic calculator - Google Patents

Electronic calculator

Info

Publication number
GB1432421A
GB1432421A GB1658773A GB1658773A GB1432421A GB 1432421 A GB1432421 A GB 1432421A GB 1658773 A GB1658773 A GB 1658773A GB 1658773 A GB1658773 A GB 1658773A GB 1432421 A GB1432421 A GB 1432421A
Authority
GB
United Kingdom
Prior art keywords
inputs
key
display
electronic calculator
currently
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
GB1658773A
Other languages
English (en)
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
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of GB1432421A publication Critical patent/GB1432421A/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
    • H03M11/20—Dynamic coding, i.e. by key scanning
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/04—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D233/28—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D233/30—Oxygen or sulfur atoms
    • C07D233/42—Sulfur atoms
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Calculators And Similar Devices (AREA)
  • Storage Device Security (AREA)
GB1658773A 1972-05-22 1973-04-06 Electronic calculator Expired GB1432421A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25585672A 1972-05-22 1972-05-22

Publications (1)

Publication Number Publication Date
GB1432421A true GB1432421A (en) 1976-04-14

Family

ID=22970146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1658773A Expired GB1432421A (en) 1972-05-22 1973-04-06 Electronic calculator

Country Status (11)

Country Link
JP (1) JPS5642013B2 (cs)
BR (1) BR7303238D0 (cs)
DD (1) DD108160A5 (cs)
DE (1) DE2264060A1 (cs)
FR (1) FR2185820B1 (cs)
GB (1) GB1432421A (cs)
HU (1) HU171187B (cs)
IL (1) IL42298A0 (cs)
IT (1) IT988174B (cs)
NL (1) NL7307140A (cs)
PH (1) PH11074A (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853376B2 (ja) * 1975-07-17 1983-11-29 株式会社東芝 割引き割増し計算の演算方式

Also Published As

Publication number Publication date
IL42298A0 (en) 1973-07-30
JPS5642013B2 (cs) 1981-10-01
HU171187B (hu) 1977-11-28
NL7307140A (cs) 1973-11-26
IT988174B (it) 1975-04-10
JPS4950844A (cs) 1974-05-17
FR2185820B1 (cs) 1974-07-05
DD108160A5 (cs) 1974-09-05
PH11074A (en) 1977-10-25
DE2264060A1 (de) 1974-03-07
FR2185820A1 (cs) 1974-01-04
BR7303238D0 (pt) 1974-07-11

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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

Effective date: 19930405