Other kinds have existed. Ternary computers [0], where the most famous examples come from the Soviet Union. And whilst I'm not aware of any computer that used

Other kinds have existed. Ternary computers [0], where the most famous examples come from the Soviet Union. And whilst I'm not aware of any computer that used the quaternary numerical system, it should be possible. However, none of that necessarily means it's a good idea or necessary to perform quaternary logic. [0] https://en.m.wikipedia.org/wiki/Ternary_computer https://en.m.wikipedia.org/wiki/Ternary_computer