Reading the digitale in entrance in visual basic

I have bought the edu05 and have tested this with my own visual basic routines. However, I seem to miss the dll library to read the digitale in. can you help me with this problem. Al the other features is no problem. analog in, out, digitale out. But what about the digitale in? Maybe i have overseen something.

Have you changed the input/output mode to “input”?
Here an example:

Dim i As Integer InOutMode(1) ' input mode i = ReadAllDigital() InOutMode(0) ' output mode