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ethan
2022-09-13 6c6974eb42f2995767fd94b01b120b6f9b4fc1a9
2022-07-18 tao_z
更新原理图，新增电源控制端二极管，防止负压破坏PNP. 调整按键采集电路电阻，增加按键识别度
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