| 摘要 |
<p>PURPOSE:To provoke the user to pay attention and to eliminate the need for being cautious at all times, by generating an alarm signal when the amount of tape running reaches a designated position of tape running. CONSTITUTION:In Figure, 6 is an input device to designate a desired running amount, which outputs an input signal to a comparator 5. The comparator 5 compares the numeral of a counter 3 with that from the input device 6 and gives an output when they are equal. When the comparator 5 gives an output, the alarm signal is generated from an alarm device 7 and the signal generates an alarm sound from a sound body 8.</p> |
