I have recently learned a little bit of Visual Basic. I came up with an idea just a few minutes ago about a circuit that i could build that plugs into the parallel port that would control the speed of ...

The design of the project utilizes the parallel programming mode through parallel port in order to create this 2052/4052 programmer. For device programming, two interfaces with same command format are ...

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 ...