IT944874B - IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORS - Google Patents

IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORS

Info

Publication number
IT944874B
IT944874B IT54016/71A IT5401671A IT944874B IT 944874 B IT944874 B IT 944874B IT 54016/71 A IT54016/71 A IT 54016/71A IT 5401671 A IT5401671 A IT 5401671A IT 944874 B IT944874 B IT 944874B
Authority
IT
Italy
Prior art keywords
troduction
improvement
data
electronic calculators
keypad
Prior art date
Application number
IT54016/71A
Other languages
Italian (it)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT944874B publication Critical patent/IT944874B/en

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
IT54016/71A 1970-11-14 1971-11-11 IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORS IT944874B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7016723.A NL166140C (en) 1970-11-14 1970-11-14 KEYBOARD.

Publications (1)

Publication Number Publication Date
IT944874B true IT944874B (en) 1973-04-20

Family

ID=19811565

Family Applications (1)

Application Number Title Priority Date Filing Date
IT54016/71A IT944874B (en) 1970-11-14 1971-11-11 IMPROVEMENT IN THE KEYPAD SETTINGS AND IN THE TRODUCTION OF DATA FOR EXAMPLE IN ELECTRONIC CALCULATORS

Country Status (9)

Country Link
US (1) US3750160A (en)
JP (1) JPS5315336B1 (en)
AT (1) AT324021B (en)
BE (1) BE775310A (en)
CA (1) CA925794A (en)
CH (1) CH538156A (en)
GB (1) GB1370654A (en)
IT (1) IT944874B (en)
NL (1) NL166140C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932838A (en) * 1971-04-23 1976-01-13 General Electric Company Method and apparatus for controlling circuitry with a plurality of switching means
GB1416456A (en) * 1971-12-07 1975-12-03 Matsushita Electric Ind Co Ltd Signal processing arrangements
JPS4931232A (en) * 1972-07-21 1974-03-20
US3825926A (en) * 1973-02-05 1974-07-23 Ibm Interfacing circuitry for connecting a remote keyboard with a data receiving buffer
US3974478A (en) * 1973-08-09 1976-08-10 Nippon Gakki Seizo Kabushiki Kaisha Key switch scanning and encoding system
US3995252A (en) * 1973-12-26 1976-11-30 General Electric Company Data processing arrangement for printers
US4134320A (en) * 1974-08-19 1979-01-16 Nippon Gakki Seizo Kabushiki Kaisha Key assigner for use in electronic musical instrument
US3982236A (en) * 1974-12-24 1976-09-21 Haig Kafafian Communications and control method and apparatus for persons who may have muscular incoordination and/or spasticity
US4117758A (en) * 1976-11-04 1978-10-03 Kimball International, Inc. Binary word debouncer
JPS5477532A (en) * 1977-12-02 1979-06-21 Matsushita Electric Ind Co Ltd Key identifying circuit
DE3023579C2 (en) * 1980-06-24 1984-10-31 Matth. Hohner Ag, 7218 Trossingen Electronic musical instrument

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675239A (en) * 1970-09-14 1972-07-04 Ncr Co Unlimited roll keyboard circuit

Also Published As

Publication number Publication date
US3750160A (en) 1973-07-31
AT324021B (en) 1975-08-11
NL166140C (en) 1981-06-15
CH538156A (en) 1973-06-15
BE775310A (en) 1972-05-12
DE2154596B2 (en) 1976-08-05
JPS5315336B1 (en) 1978-05-24
DE2154596A1 (en) 1972-05-25
NL166140B (en) 1981-01-15
NL7016723A (en) 1972-05-16
GB1370654A (en) 1974-10-16
CA925794A (en) 1973-05-08

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