GB2038056B - Keyboard circuits - Google Patents

Keyboard circuits

Info

Publication number
GB2038056B
GB2038056B GB7942105A GB7942105A GB2038056B GB 2038056 B GB2038056 B GB 2038056B GB 7942105 A GB7942105 A GB 7942105A GB 7942105 A GB7942105 A GB 7942105A GB 2038056 B GB2038056 B GB 2038056B
Authority
GB
United Kingdom
Prior art keywords
keyboard circuits
keyboard
circuits
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
GB7942105A
Other versions
GB2038056A (en
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries 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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB2038056A publication Critical patent/GB2038056A/en
Application granted granted Critical
Publication of GB2038056B publication Critical patent/GB2038056B/en
Expired legal-status Critical Current

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
    • H03M11/22—Static coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Electronic Switches (AREA)
GB7942105A 1978-12-20 1979-12-06 Keyboard circuits Expired GB2038056B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2854934A DE2854934C3 (en) 1978-12-20 1978-12-20 Circuit arrangement for an input keyboard

Publications (2)

Publication Number Publication Date
GB2038056A GB2038056A (en) 1980-07-16
GB2038056B true GB2038056B (en) 1982-05-19

Family

ID=6057693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7942105A Expired GB2038056B (en) 1978-12-20 1979-12-06 Keyboard circuits

Country Status (6)

Country Link
JP (2) JPS5587229A (en)
DE (1) DE2854934C3 (en)
FR (1) FR2444973A1 (en)
GB (1) GB2038056B (en)
IE (1) IE48718B1 (en)
IT (1) IT1193347B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152908U (en) * 1974-10-21 1976-04-22
JPS52117027A (en) * 1976-03-26 1977-10-01 Fujitsu Ltd Switch input data sampling
JPS5559533A (en) * 1978-10-30 1980-05-06 Fujitsu Ltd Switch matrix device

Also Published As

Publication number Publication date
IE792463L (en) 1980-06-20
IT1193347B (en) 1988-06-15
FR2444973A1 (en) 1980-07-18
DE2854934A1 (en) 1980-06-26
JPS5587229A (en) 1980-07-01
DE2854934C3 (en) 1981-08-13
GB2038056A (en) 1980-07-16
IE48718B1 (en) 1985-05-01
DE2854934B2 (en) 1980-10-09
JPS6275527U (en) 1987-05-14
IT7928155A0 (en) 1979-12-18
FR2444973B3 (en) 1982-09-24

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee