7-segment decoder using relays.
(Corresponds to the display of 0 to F)
In Ver. 7, the contact count is minimized, but due to limited coil sharing, it still requires nine DPDT relays. By introducing rules to restrict the types of coils used—building on the beam search method from Ver. 7—I successfully reduced both the number of coils and contacts, making it possible to build the circuit using only six DPDT relays. Ver. 8 can be considered backward-compatible with Ver. 6.
ver7
http://everycircuit.com/circuit/4519546056736768
