JPS5262475A - Crystal oscillation type wristwatch - Google Patents

Crystal oscillation type wristwatch

Info

Publication number
JPS5262475A
JPS5262475A JP13857475A JP13857475A JPS5262475A JP S5262475 A JPS5262475 A JP S5262475A JP 13857475 A JP13857475 A JP 13857475A JP 13857475 A JP13857475 A JP 13857475A JP S5262475 A JPS5262475 A JP S5262475A
Authority
JP
Japan
Prior art keywords
crystal oscillation
oscillation type
type wristwatch
frequency operation
wristwatch
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
JP13857475A
Other languages
Japanese (ja)
Inventor
Taku Yamazaki
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP13857475A priority Critical patent/JPS5262475A/en
Publication of JPS5262475A publication Critical patent/JPS5262475A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:A semiconductor device is made in a two-pellet system for high frequency operation and low frequency operation, whereby the increase in production cost and power consumption is kept minimum despite the application of an AT-cut crystal vibrator and accuracy is made more than 10 times higher than that of conventional systems.
JP13857475A 1975-11-18 1975-11-18 Crystal oscillation type wristwatch Pending JPS5262475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13857475A JPS5262475A (en) 1975-11-18 1975-11-18 Crystal oscillation type wristwatch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13857475A JPS5262475A (en) 1975-11-18 1975-11-18 Crystal oscillation type wristwatch

Publications (1)

Publication Number Publication Date
JPS5262475A true JPS5262475A (en) 1977-05-23

Family

ID=15225302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13857475A Pending JPS5262475A (en) 1975-11-18 1975-11-18 Crystal oscillation type wristwatch

Country Status (1)

Country Link
JP (1) JPS5262475A (en)

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