| 摘要 |
PURPOSE:To elevate the reliability with a simplified operation by pushing in an external operation member from the normal position to change the alarm display. CONSTITUTION:When one push is given to a crown 9 from the normal position at the first step, a switch S1 is turned OFF and with an alarm sounding control circuit turned OFF, an alarm set display panel 30 changes from ON to OFF in display. When another one push is given to the crown 9, the original alarm sounding is turned ON and hence, it is switched cyclically from ON to OFF in a simple manner. Then, the memory contents of a hour counting circuit and a minute counting circuit are compared with the contents of a time counter by a coincidence detection circuit and an alarm sounding device (g) is driven to give a sound by the coincidence output. |
