The course represents an introduction to the technology of component software development. Microsoft's technologies COM, OLE and ActiveX are used there as an wide-spread model accessible easily by any student. Also OPC ( OLE for Process Control)used in the field of process control is discussed as an extension of the above technologies . The practical training is dedicated to mastering the RAD technologies as represented by DELPHI an also to the basic mastering of OLE/COM resp. CORBA technologies by tools supported by Delphi.