Hey guys, I’m from germany.
So, please excuse my not perfect english 
My problem is, that we are workting with the K8055 USB-Interface in school, and we got some homeworks. But I can’t check them, because I don’t have a K8055. Is there a simulator which simulates the K8055 on my computer? Would be enough to have the LED’s.
Thanks.
An emulation version of the K8055D.DLL is available.
It returns the digital and analog output values as digital and analog input values.
You can start playing with it using the demo software K8055_Demo.exe. Replace the original DLL in the folder with this debug version of the DLL.
Here is the link to download the debug version of the DLL: box.net/shared/5ga6zdyx9x
Please see also this thread for some more info: viewtopic.php?f=3&t=4145
If anyone else is looking for a way to simulate the behaviour of the Velleman K8055, here is an open source project that I build, which allows you to do just that.