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 ...

In circuits connected in parallel, the components are connected on different branches. Find out more with BBC Bitesize. For students between the ages of 11 and 14.

Figure 2: Constant parallel resistance maps as a circle. (Click on image to enlarge) There are two circles here, one for a constant parallel resistance and a second for a constant reactance. The ...