| 摘要 |
PURPOSE:To enable setting of the generation of sounds according to the liking of a user by counting sequentially time data of different kind set on the basis of an alarm time and by generating different sounds sequentially every time when counting of each time is ended. CONSTITUTION:When a time counted by a counter 4 coincides with the alarm time set in a counter 5, an output is generated from a coincidence circuit 6 and it triggers FF31, maintaining the input of a gate circuit 64 at ''1''. The output Q of FF31 turns ''1'' and is supplied to a sound controlling circuit 24, and a modulated-frequency signal makes a weak sound generated from a speaker 26 through the intermediary of a sound generating circuit 25. When a time passes and a counter 17 shows the same value with a time set in a latch circuit 15, an output ''1'' is generated in a coincidence circuit 18, the output of the gate circuit 64 is inversed, FF32 is triggered, the output Q turns ''1'', and the level of the terminal L2 of the sound controlling circuit 24 turns ''1''. Then, a high sound- level generating circuit is selected by the sound controlling circuit 24 and the sound from the speaker 26 is made high. And, when the output of a counter 19 coincides with the output of a latch circuit 16, the generation of the sound is stopped. |
