JPS5676829A - Book type multiitem key input device - Google Patents

Book type multiitem key input device

Info

Publication number
JPS5676829A
JPS5676829A JP15365979A JP15365979A JPS5676829A JP S5676829 A JPS5676829 A JP S5676829A JP 15365979 A JP15365979 A JP 15365979A JP 15365979 A JP15365979 A JP 15365979A JP S5676829 A JPS5676829 A JP S5676829A
Authority
JP
Japan
Prior art keywords
book
key input
multiitem
input device
multivibrator
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
JP15365979A
Other languages
Japanese (ja)
Inventor
Tatsuro Konuma
Sumio Koide
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15365979A priority Critical patent/JPS5676829A/en
Publication of JPS5676829A publication Critical patent/JPS5676829A/en
Pending legal-status Critical Current

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  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To prevent the misinput when the book is set and thus obtain the accurate key input information, by providing such circuit which inhibits the input of the item key as long as the book is set completely.
CONSTITUTION: The book data detected by the book sensor 4 is supplied to the gate circuit 21, and the low-level and high-level outputs are generated when the book is not set and then set respectively to drive the one shot multivibrator 22. The output Q' of the multivibrator 22 is applied to the computer as well as to one side of the AND gate 25. At the same time, the data of the item key matrix 23 of the book type multiitem key input device is encoded by the encoder 24 to deliver the code signal as well as apply the strobe signal to the other side of the gate 25. The strobe signal output is interlocked while the output Q' of the multivibrator 22 is delivered, and the item key input is inhibited. Thus the misinput is prevented when the book is set.
COPYRIGHT: (C)1981,JPO&Japio
JP15365979A 1979-11-29 1979-11-29 Book type multiitem key input device Pending JPS5676829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15365979A JPS5676829A (en) 1979-11-29 1979-11-29 Book type multiitem key input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15365979A JPS5676829A (en) 1979-11-29 1979-11-29 Book type multiitem key input device

Publications (1)

Publication Number Publication Date
JPS5676829A true JPS5676829A (en) 1981-06-24

Family

ID=15567364

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15365979A Pending JPS5676829A (en) 1979-11-29 1979-11-29 Book type multiitem key input device

Country Status (1)

Country Link
JP (1) JPS5676829A (en)

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