So I'm trying to detect through Visual Basic 6.0 when a voltage change occurs on one of the pins of the serial/parallel port. The whole thing is pretty simple; no data transfer/handshaking/etc needs ...

With the continuing manufacture of new computers, there is a clear and obvious trend of the parallel port becoming less and less common. For our younger readers; the parallel port is an interface ...

<br>The data outputs on most parallel ports are at least as strong as the original port's, but no guarantees. If you need 5V, you can use one of the high-efficiency step-up regulators from Maxim & ...