JPS51147213A - Keyboard circuit and key switch discriminating circuit - Google Patents

Keyboard circuit and key switch discriminating circuit

Info

Publication number
JPS51147213A
JPS51147213A JP50071753A JP7175375A JPS51147213A JP S51147213 A JPS51147213 A JP S51147213A JP 50071753 A JP50071753 A JP 50071753A JP 7175375 A JP7175375 A JP 7175375A JP S51147213 A JPS51147213 A JP S51147213A
Authority
JP
Japan
Prior art keywords
circuit
key switch
keyboard
switch discriminating
discriminating circuit
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.)
Pending
Application number
JP50071753A
Other languages
Japanese (ja)
Inventor
Toshinori Otsuka
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 JP50071753A priority Critical patent/JPS51147213A/en
Publication of JPS51147213A publication Critical patent/JPS51147213A/en
Pending legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: Reduction in the number of terminals for inputs and outputs of a key matrix.
COPYRIGHT: (C)1976,JPO&Japio
JP50071753A 1975-06-13 1975-06-13 Keyboard circuit and key switch discriminating circuit Pending JPS51147213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50071753A JPS51147213A (en) 1975-06-13 1975-06-13 Keyboard circuit and key switch discriminating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50071753A JPS51147213A (en) 1975-06-13 1975-06-13 Keyboard circuit and key switch discriminating circuit

Publications (1)

Publication Number Publication Date
JPS51147213A true JPS51147213A (en) 1976-12-17

Family

ID=13469596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50071753A Pending JPS51147213A (en) 1975-06-13 1975-06-13 Keyboard circuit and key switch discriminating circuit

Country Status (1)

Country Link
JP (1) JPS51147213A (en)

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