What type of computer uses three possible values in its calculations: the digits -1, 0, and +1?

Question

What is a word for a computer user's representation of themselves, usually in the form of a three-dimensional model used in computer games?

Answer 1

Ternary computer
A ternary computer uses three discrete states, unlike binary which uses two. The digits in the states can take a number of forms; the "-1, 0, +1" one, known as "balanced ternary", is the most usual.