DK122195B - Keyboard for a calculator. - Google Patents

Keyboard for a calculator.

Info

Publication number
DK122195B
DK122195B DK471269AA DK471269A DK122195B DK 122195 B DK122195 B DK 122195B DK 471269A A DK471269A A DK 471269AA DK 471269 A DK471269 A DK 471269A DK 122195 B DK122195 B DK 122195B
Authority
DK
Denmark
Prior art keywords
calculator
keyboard
Prior art date
Application number
DK471269AA
Other languages
Danish (da)
Inventor
A Kolly
Original Assignee
Ricoh Kk
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 Ricoh Kk filed Critical Ricoh Kk
Publication of DK122195B publication Critical patent/DK122195B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards
    • G06C7/08—Keyboards with one set of keys for all denominations, e.g. ten-key board

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Transmission Devices (AREA)
DK471269AA 1968-09-03 1969-09-03 Keyboard for a calculator. DK122195B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1320768A CH496993A (en) 1968-09-03 1968-09-03 Device for entering values into a calculating machine, with reduced keyboard

Publications (1)

Publication Number Publication Date
DK122195B true DK122195B (en) 1972-01-31

Family

ID=4390333

Family Applications (1)

Application Number Title Priority Date Filing Date
DK471269AA DK122195B (en) 1968-09-03 1969-09-03 Keyboard for a calculator.

Country Status (6)

Country Link
US (1) US3598971A (en)
CH (1) CH496993A (en)
DK (1) DK122195B (en)
FR (1) FR2017235A1 (en)
GB (1) GB1279655A (en)
SE (1) SE349411B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152759A (en) * 1964-10-13 Interlocked open keyboards with electric restoring
US2697552A (en) * 1954-12-21 Buzzi
US2975971A (en) * 1954-11-13 1961-03-21 Oerlikon Buehrle Ag Calculating machine with digit keys and function control keys
US3017463A (en) * 1959-04-10 1962-01-16 Bendix Corp Keyboard apparatus
US3169701A (en) * 1961-01-03 1965-02-16 Sperry Rand Corp Interchangeable key blank and key button combination
US3430226A (en) * 1965-05-05 1969-02-25 Sperry Rand Corp Calculators

Also Published As

Publication number Publication date
CH496993A (en) 1970-09-30
DE1944145B2 (en) 1972-08-24
US3598971A (en) 1971-08-10
SE349411B (en) 1972-09-25
DE1944145A1 (en) 1970-05-21
FR2017235A1 (en) 1970-05-22
GB1279655A (en) 1972-06-28

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