分析了脉宽调制信号动态调节LED亮度的原理，设计了单片机控制电路；

The principle of PWM signals adjusting LED bright was analyzed, and the controlling circuit of MCU was designed.

youdao

分析了脉宽调制信号动态调节LED亮度的原理，设计了单片机控制电路；

The principle of PWM signals adjusting LED bright was analyzed, and the controlling circuit of MCU was designed.

youdao