COM
      
      
Component Object Model, or COM technologies in the Microsoft Windows 
family of operating systems enables software components to communicate.  
Developers use COM to create re-usable software modules that are 
exposed within the Windows environment.  Modules from different 
applications can be integrated into seamless and powerful solutions.
Distributed Component Object Model, or DCOM is part of the Microsoft COM 
family of technologies.  Developers use DCOM to expose software modules 
across networks to build efficient distributed applications.
Control Products Unlimited, Inc. uses COM in several of our applications and 
solutions.  For example, COM is used by OPClient to share process 
information with field instrumentation through OPC.  DBReport uses COM to 
communicate with Microsoft Excel for historical reporting and trending 
features.  The RTDB uses DCOM to expose process data to client 
applications across the network.