| 摘要 |
PROBLEM TO BE SOLVED: To intermittently light or continuously light a light-emitting diode, irrespective of logic of a control signal by a simple structure and at low cost. SOLUTION: A drive circuit 3, wherein a control signal 1 and a logic selective signal S are inputted for lighting up the light-emitting diode and the lighting and extinguishing of light for a light-emitting diode 1 are controlled by the logical judgement of the signals, a first resistor 2 which controls the current flowing to the light-emitting diode 1, and a second resistor 4 used as a pull-up resistor which stabilizes the signal level of the logical selective signal are provided in this light-emitting diode device. |
