在数字电路中，常需要对较高频率的时钟进行分频操作，得到较低频率的时钟信号。我们知道，在硬件电路设计中时钟信号时非常重要的。 -In digital circuits, often requires a higher clock frequency sub-band operation, a lower frequency clock signal. We know that in the hardware circuit design, the clock signal is very im