Crystal Software
This library allows the developer to add asynchronous serial port communications capabilities to their application. This library is in the form of several DLLs so that the library can be called from Access, Visual Basic, Paradox, C/C++, SmallTalk, Delphi, FoxPro, SqlBASE, dBFast, Oracle, PowerBuilder, Clipper, Turbo Pascal, and an enormous number of other 4GL languages in the Windows environment.