STC12C5204AD单片机ad采样输出pwm并将ad的值通过串口发送给上位机，有原理图，-STC12C5204AD SCM ad sample output pwm and ad value to send to the host computer through the serial port schematic

STC12C5204AD单片机开发板上实现modbus协议，通过协议可以返回电压转换及lm35获取的温度，并设置PWM占空比，设置EEPROm中数据，06模式支持广播模式，在3块单片机开发板联合的情况下试验通过 -STC12C5204AD microcontroller development boards implement modbus protocol, protocol can be returned by the voltage conversion and lm35 to obt

STC12C5204AD单片机实现PWM调制音频的C语言程序例子-STC12C5204AD MCU PWM modulation audio examples of the C language program