JPS54119838A - Display and control system for liquid crystal - Google Patents
Display and control system for liquid crystalInfo
- Publication number
- JPS54119838A JPS54119838A JP2614478A JP2614478A JPS54119838A JP S54119838 A JPS54119838 A JP S54119838A JP 2614478 A JP2614478 A JP 2614478A JP 2614478 A JP2614478 A JP 2614478A JP S54119838 A JPS54119838 A JP S54119838A
- Authority
- JP
- Japan
- Prior art keywords
- display
- interruption signal
- liquid crystal
- signal
- period
- 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
Abstract
PURPOSE: To make the life of liquid crystal longer, by making the electric amount fed to the liquid crystal always zero even with the display interruption signal produced on the way of display period, by means of waiting of operational processing based on the interruption signal, in a small sized calculator.
CONSTITUTION: Negative display signal is fed to the liquid crystal display unit 10 at a half of the display period and positive display signal is at other half period, and the operation processing 9 is executed with the interruption signal and the result is displayed. In this case, the interruption signal is tentatively memorized 12 and the section of the display period is detected 13 during the memory of interruption signal, and the operation processing 9 based on the interruption signal is waited until the section is detected 13 from the input of the interruption signal. Thus, even if the display interruption signal is produced on the way of display period, the electric amount fed to the liquid crystal is always zeroed, allowing to produce longer life.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2614478A JPS54119838A (en) | 1978-03-08 | 1978-03-08 | Display and control system for liquid crystal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2614478A JPS54119838A (en) | 1978-03-08 | 1978-03-08 | Display and control system for liquid crystal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54119838A true JPS54119838A (en) | 1979-09-18 |
JPS6313192B2 JPS6313192B2 (en) | 1988-03-24 |
Family
ID=12185342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2614478A Granted JPS54119838A (en) | 1978-03-08 | 1978-03-08 | Display and control system for liquid crystal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54119838A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57101892A (en) * | 1980-12-17 | 1982-06-24 | Omron Tateisi Electronics Co | Display controller |
JPS60195590A (en) * | 1984-03-16 | 1985-10-04 | 松下電器産業株式会社 | Lighting apparatus |
JPS6177952A (en) * | 1984-09-25 | 1986-04-21 | Toshiba Corp | Integration circuit for arithmetic display |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS522332A (en) * | 1975-06-24 | 1977-01-10 | Casio Comput Co Ltd | Indication control system |
-
1978
- 1978-03-08 JP JP2614478A patent/JPS54119838A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS522332A (en) * | 1975-06-24 | 1977-01-10 | Casio Comput Co Ltd | Indication control system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57101892A (en) * | 1980-12-17 | 1982-06-24 | Omron Tateisi Electronics Co | Display controller |
JPS6335989B2 (en) * | 1980-12-17 | 1988-07-18 | Omron Tateisi Electronics Co | |
JPS60195590A (en) * | 1984-03-16 | 1985-10-04 | 松下電器産業株式会社 | Lighting apparatus |
JPS6177952A (en) * | 1984-09-25 | 1986-04-21 | Toshiba Corp | Integration circuit for arithmetic display |
Also Published As
Publication number | Publication date |
---|---|
JPS6313192B2 (en) | 1988-03-24 |
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