The only part where he cheated as far as I can see is the memory, that's a stati...

0x12 on Oct 16, 2011 | parent | context | favorite | on: Harry Porter's Relay Computer

The only part where he cheated as far as I can see is the memory, that's a static RAM chip. All the rest of it is relays, it runs at 6(!) Hz.

The video is quite amazing.