The idea of employing additional states in computation is not new. Traditional multi-level logic, quantum computing, and optical computing both utilize more states than the typical binary (two state) processing that most computers utilize today. Balanced Ternary is a three-state level method, where three voltage levels are chosen to represent the states 0, 1, and 2. Voltage of 0 is chosen for the "0" state, the maximum voltage (above zero) is chosen for the "1" state (often referred to as 1 or +), and the minimum voltage (below zero) is chosen for the "2" state (often referred to as -1 or -).