IT1051570B - Perfezionamento nelle tastiere a pulsanti particolarmente per calcolatori elettronici e simili - Google Patents

Perfezionamento nelle tastiere a pulsanti particolarmente per calcolatori elettronici e simili

Info

Publication number
IT1051570B
IT1051570B IT4867574A IT4867574A IT1051570B IT 1051570 B IT1051570 B IT 1051570B IT 4867574 A IT4867574 A IT 4867574A IT 4867574 A IT4867574 A IT 4867574A IT 1051570 B IT1051570 B IT 1051570B
Authority
IT
Italy
Prior art keywords
calculators
improvement
electronic
similar
button keyboards
Prior art date
Application number
IT4867574A
Other languages
English (en)
Italian (it)
Inventor
H Boulanger
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 claimed from US00334345A external-priority patent/US3808384A/en
Application filed by Texas Instruments Inc filed Critical Texas Instruments Inc
Application granted granted Critical
Publication of IT1051570B publication Critical patent/IT1051570B/it

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/7006—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard comprising a separate movable contact element for each switch site, all other elements being integrated in layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)
IT4867574A 1973-02-21 1974-02-25 Perfezionamento nelle tastiere a pulsanti particolarmente per calcolatori elettronici e simili IT1051570B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00334345A US3808384A (en) 1971-06-01 1973-02-21 Pushbutton keyboard system

Publications (1)

Publication Number Publication Date
IT1051570B true IT1051570B (it) 1981-05-20

Family

ID=23306796

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4867574A IT1051570B (it) 1973-02-21 1974-02-25 Perfezionamento nelle tastiere a pulsanti particolarmente per calcolatori elettronici e simili

Country Status (7)

Country Link
JP (1) JPS5036033A (cs)
AR (1) AR200765A1 (cs)
BR (1) BR7401238D0 (cs)
CA (1) CA1019793A (cs)
DE (1) DE2408423B2 (cs)
ES (1) ES423441A1 (cs)
IT (1) IT1051570B (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010515A1 (de) * 1980-03-19 1981-09-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Tastatur
DE3110886A1 (de) * 1981-03-20 1982-09-30 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen In einem gehaeuse angeordnete tastatur
DE9200205U1 (de) * 1992-01-10 1993-02-04 Dyna Systems GmbH, 8999 Scheidegg Eingabetastatur für besondere Umweltbedingungen

Also Published As

Publication number Publication date
CA1019793A (en) 1977-10-25
ES423441A1 (es) 1976-06-01
DE2408423B2 (de) 1977-03-03
DE2408423A1 (de) 1974-09-05
BR7401238D0 (pt) 1974-11-19
AR200765A1 (es) 1974-12-13
JPS5036033A (cs) 1975-04-04

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