There are several replacements for electronic logic; some of them have even been built. https://en.wikipedia.org/wiki/Logic_gate#Non-electronic_logic_gates htt

There are several replacements for electronic logic; some of them have even been built. https://en.wikipedia.org/wiki/Logic_gate#Non-electronic_logic_gates https://en.wikipedia.org/wiki/Logic_gate#Non-electronic_logi...