K8000 digital input for data input?

Is it possible to use digital input in k8000 board for “text” or “binary” input from other sources? How one can obtain data inputs with k8000?

As I undrestood from manual the digital input channels in this case can only detect an event of electric signal input from another source.

Not sure what you want to do, but please note that the K8000 has been obsolete for quite a while.