DK107844C - Additionsmaskine med formindsket tastatur. - Google Patents

Additionsmaskine med formindsket tastatur.

Info

Publication number
DK107844C
DK107844C DK449563AA DK449563A DK107844C DK 107844 C DK107844 C DK 107844C DK 449563A A DK449563A A DK 449563AA DK 449563 A DK449563 A DK 449563A DK 107844 C DK107844 C DK 107844C
Authority
DK
Denmark
Prior art keywords
reduced keyboard
addition machine
machine
addition
keyboard
Prior art date
Application number
DK449563AA
Other languages
English (en)
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
Application granted granted Critical
Publication of DK107844C publication Critical patent/DK107844C/da

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)
  • Character Spaces And Line Spaces In Printers (AREA)
DK449563AA 1962-09-25 1963-09-24 Additionsmaskine med formindsket tastatur. DK107844C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1900562 1962-09-25

Publications (1)

Publication Number Publication Date
DK107844C true DK107844C (da) 1967-07-10

Family

ID=11153772

Family Applications (1)

Application Number Title Priority Date Filing Date
DK449563AA DK107844C (da) 1962-09-25 1963-09-24 Additionsmaskine med formindsket tastatur.

Country Status (5)

Country Link
CH (1) CH431141A (da)
DK (1) DK107844C (da)
FR (1) FR1520367A (da)
GB (1) GB1055977A (da)
NL (1) NL145973B (da)

Also Published As

Publication number Publication date
NL145973B (nl) 1975-05-15
GB1055977A (en) 1967-01-25
FR1520367A (fr) 1968-04-12
CH431141A (fr) 1967-02-28

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