Four-valued threshold logic full adder circuit implementations
K.W. Current, D. A. Mow · International Symposium on Multiple-Valued Logic · 1978
A four-valued logic full adder accepts two four-valued inputs and a binary carry input and produces a two-quaternary-digit, base-four, output word that is the sum of the values of the inputs. In this paper we present two new current-mode logic realizations of the four-valued logic full adder. Also reviewed is a recent I2L realization of this function. In some applications, the use of these four-valued logic full adders requires fewer than 50% of the devices necessary to implement the same function with binary full adders.