why does computers language only have 0 &1?

Question

why does computers language only have 0 &1?

In: 8

Answer 1

Because 1) it is easy to implement, and 2) you don’t really need more.

It is easy to process the signal, when there is only 2 states: you just compare to middle value and crank up the difference.

And you can always combine several 0s and 1s to create more states, so you never really need more.