In the picture below there's a circuit made of nanowires. I know that every junction acts as a diode, which can either have an infinite resistance or be set to conduct from vertical to horizontal wires. Below is also a solution for how to set the circuit to act as an AND-port. http://img152.imageshack.us/img152/5526/circty8.th.jpg [Broken] But I don't get it. Could someone possibly explain this behaviour to me? Edit: I apologize if this post isn't where it should be. This thing is part of a physics course, but I guess it could very vell fit in the Engineering, Computer Science, & Technology section of the forum.