假设高信号使能，计数器每个时钟周期进行计数，PWM输出的频率为时钟频率的2次幂分频。

Suppose that Enable is high, the counter counts up every clock cycle, and the frequency of the PWM output is the clock frequency divided by 2 count bits.

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电路使用IC4的CD4069反相器作为复位延时使能，在每个计数器开始计数前引入几毫秒的延时。

The circuit uses IC4, a CD4069 inverter, as a reset-delay enable to cause a few milliseconds of delay before each counter can begin to count.

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电路使用IC4的CD4069反相器作为复位延时使能，在每个计数器开始计数前引入几毫秒的延时。

The circuit uses IC4, a CD4069 inverter, as a reset-delay enable to cause a few milliseconds of delay before each counter can begin to count.

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