VB+OBJECT编写，地理信息系统专业。 集地图的常用功能与一体。-VB DCOM prepared, geographic information systems professional. Set maps commonly used functions and integration.

VBOPCServer,OPC 服务器应用，OPC是OLE for Process Control的缩写-VBOPCServerOPC is an acronym for OLE for Process Control. The name suggests, OPC is a Microsoft COM/DCOM technology to achieve automatic control agreement