| 摘要 |
PURPOSE:To recognize more easily the elapse of time and the time to a set time by informing the elapsed time with voice for a certain time after the operation start of a timer and informing the left time till the set time hereafter. CONSTITUTION:When a timer set time comes, that is, when the timer left time becomes ''0'', a ''0'' detecting circuit 72 generates a positive single pulse. By this pulse, an output Q of an FF 74 becomes a high-level, and an output Q' becomes a low-level, and AND gates 84 and 86 are closed. Data of a ''Time up'' ROM 48 is selected and outputted by a multiplexer 46. A positive single pulse is generated from a trigger circuit 80 and is inputted to a reset input R of an FF 32 to reset temporarily the FF 32, and this pulse passes an OR gate 82 to make an output Q of an FF 92 the high-level. Then, a voice signal generating circuit 50 inputs a voice signal of ''Time up'' to a voice generating circuit 58 through a TG 56. |
