can you help me how to install c++ program of k8061?
You can download and try this new software package for the K8061:
velleman.eu/downloads/files/ … k_2011.zip
The package includes new driver and new DLL.
There are example projects written in many programming languages included.
Also C++ example projects are included.
There is also manual K8061_DLL_manual.pdf included describing all the DLL functions
You have to remove the previous driver and install the new driver (v1.0.0.6) from this download package.
Please read the Getting_Started.pdf and the README.TXT.