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74HC595的移位时钟虽然是上升沿边沿触发,但采样的却是高电平的数据

Floor 1 117.136.70.* 4/3/17 23:33
例如,当SCLK=0时DIN=1,SCLK=1时DIN=0,则存入的数据是0而不是1。如果要想存储低电平时的数据,必须再串联一个上升沿触发的D触发器。

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