Help with Middle Actuators

Hey guys,
With the new Blender 2.48 and all it’s new features, i’ve been exploring in the game engine.
So i have a question…
Can someone please give me an example of how each “Middle Logic Brick” (eg. AND) works.
I already know how to to “AND” and “PYTHON”. But what are the others? “NAND” etc.

Hi,
The “middle actuators” are called controllers.
Quoted from: http://lists.blender.org/pipermail/bf-blender-cvs/2008-June/014548.html

NAND controller is an inverted AND controller: the output is
1 if any of the input is 0.
NOR controller is an inverted OR controller: the output is 0
if any of the input is 1.
XOR controller is an exclusive OR: the output is 1 if and only
if one input is 1 and all the other inputs are 0.
XNOR controller is an inverted XOR: the output is 0 if and only
if one input is 0 and all the other inputs are 0.
The NAND, NORT and XNOR controllers are very usefull to create
complementary outputs to start and stop actuators synchronously.

Those are the new controllers that were added in 2.47