JPS51145218A - Key matrix scanning circuit - Google Patents

Key matrix scanning circuit

Info

Publication number
JPS51145218A
JPS51145218A JP50069800A JP6980075A JPS51145218A JP S51145218 A JPS51145218 A JP S51145218A JP 50069800 A JP50069800 A JP 50069800A JP 6980075 A JP6980075 A JP 6980075A JP S51145218 A JPS51145218 A JP S51145218A
Authority
JP
Japan
Prior art keywords
key matrix
scanning circuit
matrix scanning
scan signal
signal
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
JP50069800A
Other languages
Japanese (ja)
Other versions
JPS5518391B2 (en
Inventor
Yoshihiro Izumi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP50069800A priority Critical patent/JPS51145218A/en
Publication of JPS51145218A publication Critical patent/JPS51145218A/en
Publication of JPS5518391B2 publication Critical patent/JPS5518391B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: In use of the digit scan signal of indicating tube as the scan signal of key matrix, a few number of terminals can be realized by means of common connection between signal line and output line.
COPYRIGHT: (C)1976,JPO&Japio
JP50069800A 1975-06-09 1975-06-09 Key matrix scanning circuit Granted JPS51145218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50069800A JPS51145218A (en) 1975-06-09 1975-06-09 Key matrix scanning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50069800A JPS51145218A (en) 1975-06-09 1975-06-09 Key matrix scanning circuit

Publications (2)

Publication Number Publication Date
JPS51145218A true JPS51145218A (en) 1976-12-14
JPS5518391B2 JPS5518391B2 (en) 1980-05-19

Family

ID=13413166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50069800A Granted JPS51145218A (en) 1975-06-09 1975-06-09 Key matrix scanning circuit

Country Status (1)

Country Link
JP (1) JPS51145218A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101826A (en) * 1984-10-25 1986-05-20 Fujitsu Ten Ltd Matrix structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036031A (en) * 1973-07-18 1975-04-04
JPS5193126U (en) * 1975-08-12 1976-07-26
JPS5193126A (en) * 1975-02-12 1976-08-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036031A (en) * 1973-07-18 1975-04-04
JPS5193126A (en) * 1975-02-12 1976-08-16
JPS5193126U (en) * 1975-08-12 1976-07-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101826A (en) * 1984-10-25 1986-05-20 Fujitsu Ten Ltd Matrix structure

Also Published As

Publication number Publication date
JPS5518391B2 (en) 1980-05-19

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