Light Logic now has a working 2 Input AND Gate as well as the initial NAND.

This gate still uses a LED and CdS photo cell at its core and two other resistors. The best part of this simple DRL gate is that, as with the NAND, its logic out level is refreshed where as traditional diode resistor AND gates are not. I will continue to adjust the resistor values for best performance but this gate works well as is.