| 摘要 |
PURPOSE:To provide the watch capable of producing alarm sounds complying with taste by selecting the plural modulated sound signals formed with a produced sound control circuit. CONSTITUTION:When operation switches 26, 28 are operated, the output of an FF 60 is inverted by the AND output of the AND gate 56 of a switching circuit 30 and the AND gates 42, 44... of a produced sound control circuit 22 are subsequently opened by way of the shift register 66 of a selection control circuit 32. Hence, the modulated sound signals of different frequencies being applied to the gates 42, 44... are selected and the desired alarm sounds of different pitches, timbers, etc. may be produced from an alarm sound producing device 24 by way of an OR gate 52, an alarm sound producing circuit 54, etc. |
