Relays are versatile devices. A single relay can make any of the unary boolean functions, while two relays can make any of the sixteen binary boolean functions.
For the complete text on how to use relays for logic, see relay_logic.txt (15.3KB)
A quick reference of how to make the fourteen logic binary boolean gates using either zero, one, or two relays is available at quick reference.
Modified Sun Mar 25 08:48:47 2007
generated Sun Mar 25 08:56:33 2007
http://jeff.tk/relaylogic/