The VM110N interface board has 5 digital input channels and 8 digital output channels. In addition, there are two analogue inputs and two analogue outputs with 8 bit resolution. The number of inputs/outputs can be further expanded by connecting more (up to a maximum of four) cards to the PC's USB connectors. All communication routines are contained in a Dynamic Link Library (DLL) K8055D.DLL. You may write custom Windows (2000, XP, Vista, Windows 7) applications in Delphi, Visual Basic, C++ Builder or any other 32-bit Windows application development tool that supports calls to a DLL. Source code for Visual Basic , Visual C++, Visual C#, Excel, Delphi and Borland C++ Builder included. FEATURES: minimum system: Pentium class CPU, USB1.1 or higher connection, Windows XP or highe,r CD ROM player and mouse. DIAGNOSTIC / TEST SOFTWARE: separate output / input test7, clear all / set all function, counter function on inputs 1 and 2 with adjustable debounce (max 2KHz depends on total I/O load), analog output set sliders, analog input bar-graph indication.