Abstract
Parallel-prefix adders offer a highly efficient solution to the binary addition problem and are well-suited for VLSI implementations. A novel framework is introduced, which allows the design of parallel-prefix Ling adders. The proposed approach saves one-logic level of implementation compared to the parallel-prefix structures proposed for the traditional definition of carry lookahead equations and reduces the fanout requirements of the design. Experimental results reveal that the proposed adders achieve delay reductions of up to 14 percent when compared to the fastest parallel-prefix architectures presented for the traditional definition of carry equations.
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