JPS57159332A - Keyboard controlling system - Google Patents
Keyboard controlling systemInfo
- Publication number
- JPS57159332A JPS57159332A JP56043872A JP4387281A JPS57159332A JP S57159332 A JPS57159332 A JP S57159332A JP 56043872 A JP56043872 A JP 56043872A JP 4387281 A JP4387281 A JP 4387281A JP S57159332 A JPS57159332 A JP S57159332A
- Authority
- JP
- Japan
- Prior art keywords
- reading
- microcomputer
- signal
- lines
- positive potential
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
- H03M11/20—Dynamic coding, i.e. by key scanning
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56043872A JPS57159332A (en) | 1981-03-27 | 1981-03-27 | Keyboard controlling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56043872A JPS57159332A (en) | 1981-03-27 | 1981-03-27 | Keyboard controlling system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57159332A true JPS57159332A (en) | 1982-10-01 |
Family
ID=12675783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56043872A Pending JPS57159332A (en) | 1981-03-27 | 1981-03-27 | Keyboard controlling system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57159332A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01296330A (ja) * | 1988-05-25 | 1989-11-29 | Yaesu Musen Co Ltd | キースキャン方式 |
-
1981
- 1981-03-27 JP JP56043872A patent/JPS57159332A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01296330A (ja) * | 1988-05-25 | 1989-11-29 | Yaesu Musen Co Ltd | キースキャン方式 |
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