The first 74hc164 put the first frame data parallel output, LED1 showed that the data (sending timing as figure2shows).
第一个74hc164把第一帧数据并行输出，LED1显示该数据(发送时序如图2所示)。
The first 74hc164 put the first frame data parallel output, LED1 showed that the data (sending timing as figure2shows).
第一个74hc164把第一帧数据并行输出，LED1显示该数据(发送时序如图2所示)。
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