Here's another one (smaller, but more messy!): http://www.kilian-leonhardt.de/relaiscomputer/pics/pic4.htm http://www.kilian-leonhardt.de/relaiscomputer/pics/pi

Here's another one (smaller, but more messy!): http://www.kilian-leonhardt.de/relaiscomputer/pics/pic4.htm http://www.kilian-leonhardt.de/relaiscomputer/pics/pic4.htm I also bought a neat little 4-bit relais computer from this person (Kilian Leonhardt). It's got just enough program memory to do a multiplication algorithm in.