JPS52120A - Key input device - Google Patents
Key input deviceInfo
- Publication number
- JPS52120A JPS52120A JP50076274A JP7627475A JPS52120A JP S52120 A JPS52120 A JP S52120A JP 50076274 A JP50076274 A JP 50076274A JP 7627475 A JP7627475 A JP 7627475A JP S52120 A JPS52120 A JP S52120A
- Authority
- JP
- Japan
- Prior art keywords
- input device
- key input
- reduce number
- wirings
- diodes
- 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 reduce number of diodes to reduce number of wirings between keyboard and operational circuits.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50076274A JPS52120A (en) | 1975-06-20 | 1975-06-20 | Key input device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50076274A JPS52120A (en) | 1975-06-20 | 1975-06-20 | Key input device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52120A true JPS52120A (en) | 1977-01-05 |
Family
ID=13600663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50076274A Pending JPS52120A (en) | 1975-06-20 | 1975-06-20 | Key input device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52120A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5844635U (en) * | 1981-09-21 | 1983-03-25 | 横河電機株式会社 | key input device |
JPS5890431U (en) * | 1981-12-11 | 1983-06-18 | 株式会社アドバンテスト | input device |
-
1975
- 1975-06-20 JP JP50076274A patent/JPS52120A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5844635U (en) * | 1981-09-21 | 1983-03-25 | 横河電機株式会社 | key input device |
JPS6222898Y2 (en) * | 1981-09-21 | 1987-06-11 | ||
JPS5890431U (en) * | 1981-12-11 | 1983-06-18 | 株式会社アドバンテスト | input device |
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