用VB做的简单的局域网通信程序，主要分几个模块实现上位机与下位机通信-VB to do with a simple local area network communication program, the main achievement of several modules with the lower PC communication

基于VB的局域网 语音聊天系统 大厅模式 即时语音通信-VB-based local area network voice chat room model of real-time voice communication system