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Edward Fredkin has proposed a type of direct product automaton which is
reversible. Provision exists in the appropriate LCAU programs for
generating the rule table for such automata, as well as the tables for
their inverses.
- m a - Fredkin automaton using rule a and XOR
- M a - Inverse automaton using rule a and XOR
- n a - Fredkin automaton using rule a and XNOR
- N a - Inverse automaton using rule a and XNOR
Harold V. McIntosh
E-mail:mcintosh@servidor.unam.mx