有pic16f873实现的RS485通信，里面包括原理图和原代码。希望对pic学习的有帮助。-PIC16F873 realized there RS485 communications, which includes schematics and the original code. Pic would like to learn helpful.

基于pic16f系列的rs485通讯程序设计-PIC16F series based on the RS485 communication program design