JPS5676829A - Book type multiitem key input device - Google Patents
Book type multiitem key input deviceInfo
- 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
Links
Landscapes
- 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
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) |
-
1979
- 1979-11-29 JP JP15365979A patent/JPS5676829A/en active Pending
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