本文件是通过485通讯将接受MODBUS指令，采集AD数据，发送出并在对应的LED数码管上十六进制循环显示。-This document will be accepted by 485 MODBUS commands AD data collection, sending out and the corresponding LED digital display on the loop hex.

提供了功能强大且常用的C8051F410单片机的PCB版-the pcb of c8051f410