JPS54119838A - Display and control system for liquid crystal - Google Patents

Display and control system for liquid crystal

Info

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
Application number
JP2614478A
Other languages
Japanese (ja)
Other versions
JPS6313192B2 (en
Inventor
Hidetoshi Kobayashi
Manabu Kimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2614478A priority Critical patent/JPS54119838A/en
Publication of JPS54119838A publication Critical patent/JPS54119838A/en
Publication of JPS6313192B2 publication Critical patent/JPS6313192B2/ja
Granted legal-status Critical Current

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
JP2614478A 1978-03-08 1978-03-08 Display and control system for liquid crystal Granted JPS54119838A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522332A (en) * 1975-06-24 1977-01-10 Casio Comput Co Ltd Indication control system

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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