JPS559167A - Electronic clock - Google Patents

Electronic clock

Info

Publication number
JPS559167A
JPS559167A JP8274978A JP8274978A JPS559167A JP S559167 A JPS559167 A JP S559167A JP 8274978 A JP8274978 A JP 8274978A JP 8274978 A JP8274978 A JP 8274978A JP S559167 A JPS559167 A JP S559167A
Authority
JP
Japan
Prior art keywords
liquid crystal
crystal indicator
zero
make
input terminals
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
Application number
JP8274978A
Other languages
Japanese (ja)
Inventor
Fukuo Sekiya
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP8274978A priority Critical patent/JPS559167A/en
Publication of JPS559167A publication Critical patent/JPS559167A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electric Clocks (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE: To make it possible to adjust the timing so as to make the voltage impressed on a liquid crystal indicator zero, by providing adjusting external input terminals to an integrated circuit and using the input signals of these terminals.
CONSTITUTION: In an electronic clock provided with liquid crystal indicator 42, oscillator 22, which drives this, dividers 24 and 28; intermittent signal generator 36 sets the time to make the voltage impressed on liquid crystal indicator 42 zero periodically. Input signals are given to controller 122 from adjusting external input terminals 124 and 126, and thereby the timing that makes the voltage impressed on liquid crystal indicator 42 zero is adjusted. By the signals given to input terminals 124 and 126, the effective value of voltage actually to be impressed on the segment under the ON or OFF condition can be freely selected. Hence, on examination of the characteristics of the liquid crystal, the characteristics of the power supply circuit, and the characteristics of the drive circuit, it is possible to match the characteristics of the liquid crystal with the circuit output accurately.
COPYRIGHT: (C)1980,JPO&Japio
JP8274978A 1978-07-07 1978-07-07 Electronic clock Pending JPS559167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8274978A JPS559167A (en) 1978-07-07 1978-07-07 Electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8274978A JPS559167A (en) 1978-07-07 1978-07-07 Electronic clock

Publications (1)

Publication Number Publication Date
JPS559167A true JPS559167A (en) 1980-01-23

Family

ID=13783069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8274978A Pending JPS559167A (en) 1978-07-07 1978-07-07 Electronic clock

Country Status (1)

Country Link
JP (1) JPS559167A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57114187A (en) * 1980-12-30 1982-07-15 Suwa Seikosha Kk Drive circuit for liquid crystal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57114187A (en) * 1980-12-30 1982-07-15 Suwa Seikosha Kk Drive circuit for liquid crystal

Similar Documents

Publication Publication Date Title
JPS5481879A (en) Electronic watch
JPS559167A (en) Electronic clock
JPS53129570A (en) Crystal oscillator circuit
JPS5221870A (en) Circuit for detecting battery voltage
JPS5438165A (en) Electronic watch
JPS5296064A (en) Electronic timepiece
JPS5230470A (en) Electronic clock
JPS5218366A (en) Liquid rystal clock power circuit
JPS55491A (en) Electronic watch
JPS55121511A (en) Variation system for output voltage of power unit
JPS5279742A (en) Electronic circuit
JPS52123662A (en) Ic inspection circuit in electronic watches
JPS52127056A (en) Counter
JPS534495A (en) Electrochromic display unit
JPS5246797A (en) Electronic apparatus
JPS5312663A (en) Alarm electronic watch
JPS5386554A (en) Pulse generator
JPS5373047A (en) Generation circuit for timing signal
JPS533153A (en) Oscillation circuit of electronic watch
JPS5279973A (en) Frequency signal-to-voltage signal converter
JPS51112374A (en) Electronic watch
JPS52149494A (en) Liquid crystal display device
JPS53121666A (en) Electronic watch
JPS55160893A (en) Electronic watch
JPS5555277A (en) Digital electronic watch