vivisual c++ 源代码，RS484串口异步通讯，在vivisual c++ 6.0环境下直接编译-vivisual c++ source code, RS484 serial asynchronous communication, in vivisual c++ 6.0 compiler of the direct

vivisual c++ 源代码，串口同步通讯，在vivisual c++ 6.0环境下直接编译-vivisual c++ source code, RS484 serial asynchronous communication, in vivisual c++ 6.0 compiler of the direct