JPS5493324A - Page selection control system for multi-item key input unit - Google Patents
Page selection control system for multi-item key input unitInfo
- Publication number
- JPS5493324A JPS5493324A JP14722977A JP14722977A JPS5493324A JP S5493324 A JPS5493324 A JP S5493324A JP 14722977 A JP14722977 A JP 14722977A JP 14722977 A JP14722977 A JP 14722977A JP S5493324 A JPS5493324 A JP S5493324A
- Authority
- JP
- Japan
- Prior art keywords
- page selection
- pulse
- circuit
- motor
- selection control
- 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
Links
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: To increase the reliability of page selection control, by providing the page selection set including the position detector producing two pulses with the position of display component and the control circuit controlling the drive source.
CONSTITUTION: The motor 9 of the page selection set 1 is connected to the motor drive circuit 16 of the control circuit 15, the first pulse A of the position detector 14 is connected to the clock terminal 18 and the AND circuit 19 of the memory element 17, and the second pulse B is connected to the input terminal 21 and the clear terminal 22 of the element 17. The element 17 is connected to the reversible counter 25 via the output circuit 19. The signal coded in the encoder 28 is fed to the comparator 26 with the depression of the page selection switch 27. The count value of the counter 25 and the signal from the encoder 28 are compared in the comparator 26, controlling the circuit 16 and directing the direction of revolution of motor. The memory element 17 memorizes the input state in synchronizing with the trailing of the pulse A and it is cleared with the pulse B, then the reliability can be increased even with mis-pulse A, without malfunction.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14722977A JPS5493324A (en) | 1977-12-09 | 1977-12-09 | Page selection control system for multi-item key input unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14722977A JPS5493324A (en) | 1977-12-09 | 1977-12-09 | Page selection control system for multi-item key input unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5493324A true JPS5493324A (en) | 1979-07-24 |
JPS5612893B2 JPS5612893B2 (en) | 1981-03-25 |
Family
ID=15425480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14722977A Granted JPS5493324A (en) | 1977-12-09 | 1977-12-09 | Page selection control system for multi-item key input unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5493324A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5222828A (en) * | 1975-08-14 | 1977-02-21 | Komota Giken Kk | Keyboard device |
JPS5245223A (en) * | 1975-10-07 | 1977-04-09 | Fujitsu Ltd | Print starting administration system of printing medium |
-
1977
- 1977-12-09 JP JP14722977A patent/JPS5493324A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5222828A (en) * | 1975-08-14 | 1977-02-21 | Komota Giken Kk | Keyboard device |
JPS5245223A (en) * | 1975-10-07 | 1977-04-09 | Fujitsu Ltd | Print starting administration system of printing medium |
Also Published As
Publication number | Publication date |
---|---|
JPS5612893B2 (en) | 1981-03-25 |
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