JPS5571977A - Alarm device for hand display type electronic watch - Google Patents
Alarm device for hand display type electronic watchInfo
- Publication number
- JPS5571977A JPS5571977A JP14582778A JP14582778A JPS5571977A JP S5571977 A JPS5571977 A JP S5571977A JP 14582778 A JP14582778 A JP 14582778A JP 14582778 A JP14582778 A JP 14582778A JP S5571977 A JPS5571977 A JP S5571977A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- time
- alarm
- gate
- generate
- 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
Links
Landscapes
- Electromechanical Clocks (AREA)
Abstract
PURPOSE: To accurately display time and prevent generation of sound at altering set time in an alarm device for a hand display type electronic watch by simultaneously generating sounds for intended switch off state storage, on state and standard pulse as three signals.
CONSTITUTION: OFF of a standard switch M is set through an inverter 42 and stored in a flip-flop FF43 not reset even if the switch M is turned ON to thus cause the flip-flop FF43 to generate high level output. When the switch M is turned ON in the vicinity of the alarm time, high level ON signal is applied to an AND gate 45 applied with OFF storage signal from the flip-flop FF43 to open the AND gate 46 through the gate 45. Initial standard pulse signal formed by a one-minute digit counter 39 and a differentiator 40 is applied to this gate 46 to generate an alarm at accurate time only when the OFF storage, ON and standard pulse signals are simultaneously existed. Even if the switch M is turned ON at the alarm time set altering time, the counter 39 is reset not to generate the standard pulse therefrom to thereby generate no alarm sound.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14582778A JPS5571977A (en) | 1978-11-25 | 1978-11-25 | Alarm device for hand display type electronic watch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14582778A JPS5571977A (en) | 1978-11-25 | 1978-11-25 | Alarm device for hand display type electronic watch |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5571977A true JPS5571977A (en) | 1980-05-30 |
Family
ID=15394030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14582778A Pending JPS5571977A (en) | 1978-11-25 | 1978-11-25 | Alarm device for hand display type electronic watch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5571977A (en) |
-
1978
- 1978-11-25 JP JP14582778A patent/JPS5571977A/en active Pending
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