Two-bit restricted signed-digit quaternary full adder
Abdul Ahad S. Awwal, J.U. Ahmed · 2002
A multibit quaternary full adder is designed using a restricted set of modified signed-digit quaternary number system; Such adders could be stacked in parallel and they can add two n-bit numbers in a constant time irrespective of the operand size. An optical nonholographic content addressable memory is proposed for implementing the adder.>