STC12C5A60S2单片机P1口ADC模数转换程序，通过串行口输出到电脑终端监控，电脑终端发送“0”，返回第一通道转换值。(STC12C5A60S2 microcontroller P1 port ADC analog-to-digital conversion process, through the serial port output to the computer terminal monitoring, the computer terminal to send "0", returned to the first channel conversion value.)