用VB6.0编写的实现PC机与单片机通信的程序，单片机通过MAX232实现电平转换，VB使用MSCOMM控件实现，波特率是19200bps，无校验。-VB6.0 prepared with the realization of PC and MCU communications procedures through the MAX232 to achieve single-chip level conversion, VB control used to achieve MSCOMM, baud