VB 上位机 通过串口与单片机的通信的延时程序，该演示程序包含了普通的串口通信方式，还包含了上位机与单片机通信实例，是个不错的参考-VB host computer through the the serial microcontroller communication delay program, the demo program contains a common serial communication, also contains a host computer to communica

VC编写PC与PLC通信的程序，在VC与PLC串口通信时，运用MSCOMM控件可以实现通信-VC to write PC and PLC communication program VC PLC serial communication, the communication can be achieved using MSCOMM control

串口通信程序，MSComm方式实现，有参考价值-Serial communication program, MSComm ways, have reference value