MEDriver is implemented as a Windows Forms application. It uses the ATL sample CONNECT as the COM server, and it wraps and uses its interface IRandom and source interface IRandomEvent through CoRandom and IRandomEvent_FireEventHandler as if it was a

A free-running binary counter circulates through a binary sequence repeatedly. For example, a 4-bit binary counter counts from "0000", "0001 ", . . ., to " 11 1 1" and wraps around.