A parallel circuit is way of connecting components on separate branches, so the current can take different routes around the circuit. The current is different in different parts of a parallel circuit.

For parallel port stuff, remember that the RS232 spec can go from -12 to +12 volts signals, so you shouldn't depend on 0V being off and 3.3-5V being on (even though I've seen it interfaced that ...

Among the abundance of components making up electronic circuits, very few are as important as capacitors. These components, taking the form of conductive plates separated by an insulating material ...