VB中的MSComm 控件提供了一系列标准通信命令的接口, 它允许建立串口连接, 可以连接到其他通信设备、可发送命令、进行数据交换以及监视和响应在通信过程中可能发生的各种错误和事件, 介绍了有关的知识和技术, 并由实例分步骤说明如何利用VB6.0 中的MSComm 控件进行通信软件的开发。-MSComm controllware of VB has provided with an interface for a series of standard command orders, that permits to set up serial connection to the other communication equipment, send orders and exchange data, and monitor and response different error and events during communication. Some relevant know ledge and techniques are introduced , and how to use MSComm in VB 6.0 to develop communication software has been presented by an example.