Thomas McGahee wrote:

> You can form reasonable facsimiles of the following: a b c d (e) f (g)
> h i l n o r t u  A B C D E F (G) H I J L (N) O P S (T) U Y (Z) 0 1 2 3
> 4 5 6 7 8 9. So you can send out messages such as <Hello Bill> by
> scrolling the data to the left slowly.

  I can accept that l = I = 1, Z = 2, S = 5, B = 8, g = 9, O = 0, but I
can't really see how you can distinguish D from O or f from F.

> You can do some simple "animations" by having the segments appear to
> walk around in circles.

  Yes, real neat!

  Can you explain your two-wire protocol a bit more?
--
  Cheers,
        Paul B.