JPS5773691A - Electronic timepiece circuit - Google Patents

Electronic timepiece circuit

Info

Publication number
JPS5773691A
JPS5773691A JP14920980A JP14920980A JPS5773691A JP S5773691 A JPS5773691 A JP S5773691A JP 14920980 A JP14920980 A JP 14920980A JP 14920980 A JP14920980 A JP 14920980A JP S5773691 A JPS5773691 A JP S5773691A
Authority
JP
Japan
Prior art keywords
circuit
rom part
1sec
logical
frequency
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
JP14920980A
Other languages
Japanese (ja)
Inventor
Shinsuke Mizutani
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 JP14920980A priority Critical patent/JPS5773691A/en
Publication of JPS5773691A publication Critical patent/JPS5773691A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G3/00—Producing timing pulses
    • G04G3/02—Circuits for deriving low frequency timing pulses from pulses of higher frequency
    • G04G3/025—Circuits for deriving low frequency timing pulses from pulses of higher frequency by storing time-date which are periodically investigated and modified accordingly, e.g. by using cyclic shift-registers

Landscapes

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

Abstract

PURPOSE:To reduce current consumption by using a random logical circuit for processing high in frequency of use and disabling a data memory and a logical operation device to be used. CONSTITUTION:To a microprogram control circuit for a wrist watch, a start and a stop command for a stopwatch having 10min, 1min, 10sec, 1sec, 1/10sec, and 1/ 100sec displays are inputted 7 with a push button, etc., and an ROM part 2 is put in operation by a system starting circuit 6. A random logical circuit 8 which divides the frequency of a 100Hz signal from an oscillation frequency-dividing circuit 1 to 1Hz is started and stopped by instructions in the ROM part 2 and after the instructions in the ROM part 2 are executed, the circuit 6 stops the ROM part 2 and a logical operating circuit 4. In response to a carry to the 1sec digit from the circuit 8, an instruction is sent to the circuit 6 to operate the ROM part 2, circuit 4 and RAM part 3, thereby adding 1sec to the time of the stopwatch.
JP14920980A 1980-10-24 1980-10-24 Electronic timepiece circuit Pending JPS5773691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14920980A JPS5773691A (en) 1980-10-24 1980-10-24 Electronic timepiece circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14920980A JPS5773691A (en) 1980-10-24 1980-10-24 Electronic timepiece circuit

Publications (1)

Publication Number Publication Date
JPS5773691A true JPS5773691A (en) 1982-05-08

Family

ID=15470213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14920980A Pending JPS5773691A (en) 1980-10-24 1980-10-24 Electronic timepiece circuit

Country Status (1)

Country Link
JP (1) JPS5773691A (en)

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