JPS56155437A - Key code reading circuit - Google Patents

Key code reading circuit

Info

Publication number
JPS56155437A
JPS56155437A JP5963980A JP5963980A JPS56155437A JP S56155437 A JPS56155437 A JP S56155437A JP 5963980 A JP5963980 A JP 5963980A JP 5963980 A JP5963980 A JP 5963980A JP S56155437 A JPS56155437 A JP S56155437A
Authority
JP
Japan
Prior art keywords
key code
amplifiers
key
reading circuit
lines
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.)
Granted
Application number
JP5963980A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6242288B2 (enExample
Inventor
Kikuya Soma
Hiroshi Morito
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5963980A priority Critical patent/JPS56155437A/ja
Publication of JPS56155437A publication Critical patent/JPS56155437A/ja
Publication of JPS6242288B2 publication Critical patent/JPS6242288B2/ja
Granted 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
    • H03M11/20—Dynamic coding, i.e. by key scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
JP5963980A 1980-05-02 1980-05-02 Key code reading circuit Granted JPS56155437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5963980A JPS56155437A (en) 1980-05-02 1980-05-02 Key code reading circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5963980A JPS56155437A (en) 1980-05-02 1980-05-02 Key code reading circuit

Publications (2)

Publication Number Publication Date
JPS56155437A true JPS56155437A (en) 1981-12-01
JPS6242288B2 JPS6242288B2 (enExample) 1987-09-08

Family

ID=13118987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5963980A Granted JPS56155437A (en) 1980-05-02 1980-05-02 Key code reading circuit

Country Status (1)

Country Link
JP (1) JPS56155437A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159328A (en) * 1981-03-27 1982-10-01 Fujitsu Ltd Keyboard discriminating system
JPS585124U (ja) * 1981-06-30 1983-01-13 富士通株式会社 キ−ボ−ドエンコ−ダ
JPS5966735A (ja) * 1982-10-08 1984-04-16 Hitachi Ltd ワ−ドプロセツサ
JPS59163626A (ja) * 1983-03-07 1984-09-14 Sanyo Electric Co Ltd キ−ボ−ド識別方式

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57159328A (en) * 1981-03-27 1982-10-01 Fujitsu Ltd Keyboard discriminating system
JPS585124U (ja) * 1981-06-30 1983-01-13 富士通株式会社 キ−ボ−ドエンコ−ダ
JPS5966735A (ja) * 1982-10-08 1984-04-16 Hitachi Ltd ワ−ドプロセツサ
JPS59163626A (ja) * 1983-03-07 1984-09-14 Sanyo Electric Co Ltd キ−ボ−ド識別方式

Also Published As

Publication number Publication date
JPS6242288B2 (enExample) 1987-09-08

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