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- 在80C51单片机中,已知时钟频率为6MHz,请编程使P1. 0和P1. 1分别输出周期为2S和0. 5S的方波-In the 80C51 microcontroller, the clock frequency is known to 6MHz, please programmed to P1.0 and P1.1 outputs, respectively, for the 2S and 0.5S cycle square wave