I am trying to figure out how to get my VB program to send 5 volts through any output (serial, parallel, or USB) so I can trigger an external switch...That's it...nothing else...its so simple I can't find a direct answer to the question!
In case its relevant, the computers are new Dell dimensions and I use VB 6.0
Any help would be greatly appreciated,
Assistant Professor of Psychology
University of Maryland - College Park