> > > I've finally updated my mechanical logic gate pages with a couple of new (ish)
> > > creations. The XOR gate and the Half Adder. You can find them by going to
> > > http://www.goldfish.org.uk/xor.html and
> > > http://www.goldfish.org.uk/halfadder.html.
When are we gonna see a walker with your logic gates :)?