JPS54121775A - Digital watch - Google Patents

Digital watch

Info

Publication number
JPS54121775A
JPS54121775A JP2954978A JP2954978A JPS54121775A JP S54121775 A JPS54121775 A JP S54121775A JP 2954978 A JP2954978 A JP 2954978A JP 2954978 A JP2954978 A JP 2954978A JP S54121775 A JPS54121775 A JP S54121775A
Authority
JP
Japan
Prior art keywords
time
memory device
switch
difference
counter
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
JP2954978A
Other languages
Japanese (ja)
Inventor
Zenichi Hirakawa
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2954978A priority Critical patent/JPS54121775A/en
Publication of JPS54121775A publication Critical patent/JPS54121775A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G11/00—Producing optical signals at preselected times

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To improve the ways of use by additionally providing an externally set time memory device and an auxiliary counter which counts the difference between the time of the clock counter and the externally set time. CONSTITUTION:A memory device 8 which stores the time having been set from the outside and an auxiliary counter 9 which counts the difference between the time of the memory device 8 and the time of a clock counter 3 are additionally provided. With this, a switch 10 is closed and memory device 8 is connected to a decoder 4 by a switch 11 to introduce the output of an oscillator 1 having been frequency divided with a frequency divider 2 is introduced thereto. While it is being displayed on a display part 6, a desired time is set in the memory device 8. When the switch 10 is opened 10 after this and the auxiliary counter 9 is connected to the decoder 4 by the switch 11, then the auxiliary counter 9 counts the difference between the time of the clock counter 3 counting the current time and the time of the memory device 8 from the output of the frequency divider 2. This difference is displayed in the display part 6.
JP2954978A 1978-03-14 1978-03-14 Digital watch Pending JPS54121775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2954978A JPS54121775A (en) 1978-03-14 1978-03-14 Digital watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2954978A JPS54121775A (en) 1978-03-14 1978-03-14 Digital watch

Publications (1)

Publication Number Publication Date
JPS54121775A true JPS54121775A (en) 1979-09-21

Family

ID=12279209

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2954978A Pending JPS54121775A (en) 1978-03-14 1978-03-14 Digital watch

Country Status (1)

Country Link
JP (1) JPS54121775A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120867A (en) * 1974-03-09 1975-09-22
JPS5199080A (en) * 1975-02-26 1976-09-01 Suwa Seikosha Kk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50120867A (en) * 1974-03-09 1975-09-22
JPS5199080A (en) * 1975-02-26 1976-09-01 Suwa Seikosha Kk

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