Visual Basic与RS-232串行通信控制（最新版）-Visual Basic and RS-232 serial communication control (latest version)

详细介绍了使用VB开发RS-232通信程序的全过程，并介绍了vb通信控件的用法。-Described in detail the use of VB-RS-232 communication program the whole process and introduced the use of the Communication Control in vb.