JPS5665233A - Microcomputer encoder for keyboard - Google Patents
Microcomputer encoder for keyboardInfo
- Publication number
- JPS5665233A JPS5665233A JP14042579A JP14042579A JPS5665233A JP S5665233 A JPS5665233 A JP S5665233A JP 14042579 A JP14042579 A JP 14042579A JP 14042579 A JP14042579 A JP 14042579A JP S5665233 A JPS5665233 A JP S5665233A
- Authority
- JP
- Japan
- Prior art keywords
- encoder
- output
- code
- terminal
- busy
- 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
Abstract
PURPOSE: To make it possible to operate two encoders as if they were one encoder, by making them have the rollover or lockout function, respectively.
CONSTITUTION: A busy output is connected from the BUSY terminal to the other chip selective terminal CS, the busy output becomes a low level while a code is being sent out, and as long as this low level output is being applied to the CS terminal, the other encoder does not send out the code. And a code output of the encoder 12a or 12b is selected by controlling the gate of the tristate buffers 13a, 13b by RSFF14. In this way, the encoders 12a and 12b can be operated as if they were one encoder.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14042579A JPS5665233A (en) | 1979-11-01 | 1979-11-01 | Microcomputer encoder for keyboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14042579A JPS5665233A (en) | 1979-11-01 | 1979-11-01 | Microcomputer encoder for keyboard |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5665233A true JPS5665233A (en) | 1981-06-02 |
Family
ID=15268388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14042579A Pending JPS5665233A (en) | 1979-11-01 | 1979-11-01 | Microcomputer encoder for keyboard |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5665233A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0314017A (en) * | 1989-06-12 | 1991-01-22 | Sanyo Electric Co Ltd | Electronic apparatus |
-
1979
- 1979-11-01 JP JP14042579A patent/JPS5665233A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0314017A (en) * | 1989-06-12 | 1991-01-22 | Sanyo Electric Co Ltd | Electronic apparatus |
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