JPS554694A - Electronic apparatus - Google Patents

Electronic apparatus

Info

Publication number
JPS554694A
JPS554694A JP5747879A JP5747879A JPS554694A JP S554694 A JPS554694 A JP S554694A JP 5747879 A JP5747879 A JP 5747879A JP 5747879 A JP5747879 A JP 5747879A JP S554694 A JPS554694 A JP S554694A
Authority
JP
Japan
Prior art keywords
signals
shift register
key
double hitting
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.)
Granted
Application number
JP5747879A
Other languages
Japanese (ja)
Other versions
JPS5626862B2 (en
Inventor
Takeshi Kawanabe
Minoru Machida
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP5747879A priority Critical patent/JPS554694A/en
Publication of JPS554694A publication Critical patent/JPS554694A/en
Publication of JPS5626862B2 publication Critical patent/JPS5626862B2/ja
Granted legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To secure an easy detection for the double hitting of the key which generates the different time signals by shifting by one step the information within the shift register and then detecting generation of more than two pulses from the output circuit via the double hitting detection circuit.
CONSTITUTION: Memory elements 11W18 connect each preceding-step output terminal Q to next-step input terminal D to form shift register 21 and then applies clock pulse 20 to terminal T. The output obtained from OR gates 26, 27 and 28 each are the signals to decide which key is turned on. These signals are applied to shift register 29 plus FF30 and 31, and these outputs constitute matrix 32. In this case, the information within register 29 is shifted by one step to detect that more than two pulses have been generated from the output circuit by means of the double hitting detection circuit and input inhibition circuit 49. As a result, the double hitting of the key generating the different time signals can be detected easily.
COPYRIGHT: (C)1980,JPO&Japio
JP5747879A 1979-05-10 1979-05-10 Electronic apparatus Granted JPS554694A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5747879A JPS554694A (en) 1979-05-10 1979-05-10 Electronic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5747879A JPS554694A (en) 1979-05-10 1979-05-10 Electronic apparatus

Publications (2)

Publication Number Publication Date
JPS554694A true JPS554694A (en) 1980-01-14
JPS5626862B2 JPS5626862B2 (en) 1981-06-22

Family

ID=13056807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5747879A Granted JPS554694A (en) 1979-05-10 1979-05-10 Electronic apparatus

Country Status (1)

Country Link
JP (1) JPS554694A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57123831A (en) * 1981-01-20 1982-08-02 Sakai Chem Ind Co Ltd Preparation of magnetic iron oxide powder
JPS57191733A (en) * 1981-05-20 1982-11-25 Fujitsu Ltd Key input device
JPS6042804A (en) * 1983-08-18 1985-03-07 Hitachi Maxell Ltd Magnetic recording medium and magnetic powder for recording medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57123831A (en) * 1981-01-20 1982-08-02 Sakai Chem Ind Co Ltd Preparation of magnetic iron oxide powder
JPS6029646B2 (en) * 1981-01-20 1985-07-11 堺化学工業株式会社 Method for producing magnetic iron oxide powder
JPS57191733A (en) * 1981-05-20 1982-11-25 Fujitsu Ltd Key input device
JPS6042804A (en) * 1983-08-18 1985-03-07 Hitachi Maxell Ltd Magnetic recording medium and magnetic powder for recording medium
JPH0544163B2 (en) * 1983-08-18 1993-07-05 Hitachi Maxell

Also Published As

Publication number Publication date
JPS5626862B2 (en) 1981-06-22

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