Design of residue generators and multioperand modular adders using carry-save adders

Abstract

The design of residue generators and multioperand modular adders is studied. Novel highly parallel schemes using carry-save adders with end-around carry are proposed for either type of circuit. They are derived on the basis of the periodicity of the series of powers of two taken modulo A (A is a module). The novel circuits are faster and use less hardware than existing similar circuits.<>