JPS5717889A - Driving circuit of speaker for electronic clock - Google Patents

Driving circuit of speaker for electronic clock

Info

Publication number
JPS5717889A
JPS5717889A JP9301680A JP9301680A JPS5717889A JP S5717889 A JPS5717889 A JP S5717889A JP 9301680 A JP9301680 A JP 9301680A JP 9301680 A JP9301680 A JP 9301680A JP S5717889 A JPS5717889 A JP S5717889A
Authority
JP
Japan
Prior art keywords
signal
speaker
latch
electronic clock
data
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
JP9301680A
Other languages
Japanese (ja)
Inventor
Toshimasa Yoshinami
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
SHIMAUCHI SEIKI KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
SHIMAUCHI SEIKI 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, SHIMAUCHI SEIKI KK filed Critical Seiko Epson Corp
Priority to JP9301680A priority Critical patent/JPS5717889A/en
Publication of JPS5717889A publication Critical patent/JPS5717889A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To form various type tones and at the same time, make a CPU intermittently work so as to reduce power consumprion by making a temporary storing circuit in transistor PLA type for an electronic clock provided with a microprogram control circuit. CONSTITUTION:Data 435-438 for driving a speaker enter into a latch decoder 400 from an accumulator. One of outputs of the latch decoder 400 is selected by this data. At this time, a clock signal generation circuit temporarily stops a part of or all the clocks. To the output of the latch decorder 400, 32Hz signal 456, 16Hz signal 457- are applied, and transistors 401-407 are connected to an AND formation part in order to form a mecessary speaker drive gate signal. To the speaker drive gate signal produced in this way, a signal for modulation 468 is added to from a modulated signal 469 which drives the speaker 121.
JP9301680A 1980-07-08 1980-07-08 Driving circuit of speaker for electronic clock Pending JPS5717889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9301680A JPS5717889A (en) 1980-07-08 1980-07-08 Driving circuit of speaker for electronic clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9301680A JPS5717889A (en) 1980-07-08 1980-07-08 Driving circuit of speaker for electronic clock

Publications (1)

Publication Number Publication Date
JPS5717889A true JPS5717889A (en) 1982-01-29

Family

ID=14070650

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9301680A Pending JPS5717889A (en) 1980-07-08 1980-07-08 Driving circuit of speaker for electronic clock

Country Status (1)

Country Link
JP (1) JPS5717889A (en)

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