JPS5285454A - Key input circuit - Google Patents

Key input circuit

Info

Publication number
JPS5285454A
JPS5285454A JP157476A JP157476A JPS5285454A JP S5285454 A JPS5285454 A JP S5285454A JP 157476 A JP157476 A JP 157476A JP 157476 A JP157476 A JP 157476A JP S5285454 A JPS5285454 A JP S5285454A
Authority
JP
Japan
Prior art keywords
input circuit
key input
key
councing
standerd
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
JP157476A
Other languages
Japanese (ja)
Other versions
JPS5652501B2 (en
Inventor
Masayoshi Abe
Masashige Osaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP157476A priority Critical patent/JPS5285454A/en
Publication of JPS5285454A publication Critical patent/JPS5285454A/en
Publication of JPS5652501B2 publication Critical patent/JPS5652501B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To prevent chattering and councing of key switch and to obtain a key input circuit entering a key signal by synchronizing with a standerd pulse of system.
COPYRIGHT: (C)1977,JPO&Japio
JP157476A 1976-01-09 1976-01-09 Key input circuit Granted JPS5285454A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP157476A JPS5285454A (en) 1976-01-09 1976-01-09 Key input circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP157476A JPS5285454A (en) 1976-01-09 1976-01-09 Key input circuit

Publications (2)

Publication Number Publication Date
JPS5285454A true JPS5285454A (en) 1977-07-15
JPS5652501B2 JPS5652501B2 (en) 1981-12-12

Family

ID=11505281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP157476A Granted JPS5285454A (en) 1976-01-09 1976-01-09 Key input circuit

Country Status (1)

Country Link
JP (1) JPS5285454A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105446260A (en) * 2015-12-20 2016-03-30 苏州长风航空电子有限公司 Push-button switch control system used for aviation display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105446260A (en) * 2015-12-20 2016-03-30 苏州长风航空电子有限公司 Push-button switch control system used for aviation display

Also Published As

Publication number Publication date
JPS5652501B2 (en) 1981-12-12

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