| 摘要 |
The method is disclosed to reduce electronic parts for signal processing unit and to simplify circuit wiring of the unit by using a single port for multiple input signal. The method includes the steps of : connecting a safety switch and a temperature sensor parallelly; finding voltage level whether it comes from the safety switch or the temperature sensor for checking whether the top rid is open; finding temperature by reading voltage level from the temperature sensor in order to decide time duration for each courses, that is, washing, rinsing, and spinning , respectively.
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