Adders and Multipliers in Sub-excitable Automata
To implement binary arithmetics we employ a cellular-automaton model of an excitable medium — the 2 + -medium, [2, 3, 8]. The 2 + -medium is a two-dimensional three-state — resting (·), excited (+) and refractory (–) — cellular automaton where a resting cell becomes excited only exactly two neighbours are excited. The transitions from excited state to refractory state, and from refractory state to resting state are unconditional.
KeywordsCellular Automaton Grey Region Stationary Oscillator Full Adder Refractory State
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