RS485总线的proteus仿真工程文件及源程序，仿真程序经过调试有用，另外对于单片机的中断的查询两种方式的接收模式也的对应的源程序，（文件来源于网络）-Proteus simulation engineering documents and source code for the RS485 bus, after debugging useful simulation program, the other two ways for SCM interrupt queries receivin