At 04:40 PM 2/13/2015, Tom Sparks wrote:
I've been bouncing around the idea of building my
own relay computer
I built a greatly scaled down version of Simon more than 50 years
ago. See Chapter 3 in:
Edmund Callis Berkeley
Giant Brains, or Machines That Think
Available in DejaVu format at:
https://ia600504.us.archive.org/17/items/GiantBrains/giant_brains.djvu