JPS51114023A - A control unit for in and output signals - Google Patents
A control unit for in and output signalsInfo
- Publication number
- JPS51114023A JPS51114023A JP50039474A JP3947475A JPS51114023A JP S51114023 A JPS51114023 A JP S51114023A JP 50039474 A JP50039474 A JP 50039474A JP 3947475 A JP3947475 A JP 3947475A JP S51114023 A JPS51114023 A JP S51114023A
- Authority
- JP
- Japan
- Prior art keywords
- control unit
- output signals
- duty
- indicator
- ensuring
- 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
- Calculators And Similar Devices (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
PURPOSE: Achieving larger indicator duty where such duty is affected due to increase in the number of digit positions in desk calculators employing LSI circuit elements, and, at the same time, reducing the number of in and output LSI signal terminals while ensuring a longer service life of the indicator body.
COPYRIGHT: (C)1976,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50039474A JPS51114023A (en) | 1975-03-31 | 1975-03-31 | A control unit for in and output signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50039474A JPS51114023A (en) | 1975-03-31 | 1975-03-31 | A control unit for in and output signals |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS51114023A true JPS51114023A (en) | 1976-10-07 |
Family
ID=12554053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50039474A Pending JPS51114023A (en) | 1975-03-31 | 1975-03-31 | A control unit for in and output signals |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51114023A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5223220A (en) * | 1975-08-18 | 1977-02-22 | Toshiba Corp | Method of key loading of liquid crystal display type electronic unit a nd integrated circuit |
JPS5371530A (en) * | 1976-12-08 | 1978-06-26 | Hitachi Ltd | Input circuit |
JPS5379437A (en) * | 1976-12-24 | 1978-07-13 | Toshiba Corp | Key signal read-in system |
JPS5622514U (en) * | 1979-07-24 | 1981-02-28 | ||
JPS6086655A (en) * | 1983-10-17 | 1985-05-16 | Sanyo Electric Co Ltd | Parallel connection method of microprocessor |
US4551716A (en) * | 1981-06-30 | 1985-11-05 | Tokyo Shibaura Denki Kabushiki Kaisha | Display control for electronic calculator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51113415A (en) * | 1975-03-28 | 1976-10-06 | Toshiba Corp | Key reading system and devices |
-
1975
- 1975-03-31 JP JP50039474A patent/JPS51114023A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51113415A (en) * | 1975-03-28 | 1976-10-06 | Toshiba Corp | Key reading system and devices |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5223220A (en) * | 1975-08-18 | 1977-02-22 | Toshiba Corp | Method of key loading of liquid crystal display type electronic unit a nd integrated circuit |
JPS5818649B2 (en) * | 1975-08-18 | 1983-04-14 | 株式会社東芝 | Key signal reading circuit for liquid crystal display type electronic device |
JPS5371530A (en) * | 1976-12-08 | 1978-06-26 | Hitachi Ltd | Input circuit |
JPS5543696B2 (en) * | 1976-12-08 | 1980-11-07 | ||
JPS5379437A (en) * | 1976-12-24 | 1978-07-13 | Toshiba Corp | Key signal read-in system |
JPS5545931B2 (en) * | 1976-12-24 | 1980-11-20 | ||
JPS5622514U (en) * | 1979-07-24 | 1981-02-28 | ||
US4551716A (en) * | 1981-06-30 | 1985-11-05 | Tokyo Shibaura Denki Kabushiki Kaisha | Display control for electronic calculator |
JPS6086655A (en) * | 1983-10-17 | 1985-05-16 | Sanyo Electric Co Ltd | Parallel connection method of microprocessor |
JPH0120461B2 (en) * | 1983-10-17 | 1989-04-17 | Sanyo Electric Co |
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