CA1173164A - Calculatrice de fractions - Google Patents

Calculatrice de fractions

Info

Publication number
CA1173164A
CA1173164A CA000394402A CA394402A CA1173164A CA 1173164 A CA1173164 A CA 1173164A CA 000394402 A CA000394402 A CA 000394402A CA 394402 A CA394402 A CA 394402A CA 1173164 A CA1173164 A CA 1173164A
Authority
CA
Canada
Prior art keywords
fraction
data
key
decimal
input
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
CA000394402A
Other languages
English (en)
Inventor
Osamu Hirata
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of CA1173164A publication Critical patent/CA1173164A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Calculators And Similar Devices (AREA)
CA000394402A 1981-01-21 1982-01-18 Calculatrice de fractions Expired CA1173164A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP644681A JPS57121749A (en) 1981-01-21 1981-01-21 Fraction computer
JP6446/1981 1981-01-21

Publications (1)

Publication Number Publication Date
CA1173164A true CA1173164A (fr) 1984-08-21

Family

ID=11638635

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000394402A Expired CA1173164A (fr) 1981-01-21 1982-01-18 Calculatrice de fractions

Country Status (2)

Country Link
JP (1) JPS57121749A (fr)
CA (1) CA1173164A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4872112A (en) * 1988-07-25 1989-10-03 Hungerford Roger D Recipe calculator
US5101368A (en) * 1988-06-20 1992-03-31 Seymour Kaplan Conversion calculator
US5138566A (en) * 1990-10-01 1992-08-11 John Comforti Fractional/decimal/digital converting calculator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101368A (en) * 1988-06-20 1992-03-31 Seymour Kaplan Conversion calculator
US4872112A (en) * 1988-07-25 1989-10-03 Hungerford Roger D Recipe calculator
US5138566A (en) * 1990-10-01 1992-08-11 John Comforti Fractional/decimal/digital converting calculator

Also Published As

Publication number Publication date
JPS57121749A (en) 1982-07-29

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry