Pipelined carry look-ahead adder
D.G. Crawley, Gehan A. J. Amaratunga
Abstract
D.G. Crawley, Gehan A. J. Amaratunga
Abstract
A pipelined carry look-ahead adder is described which is particularly suitable for use with a pipelined parallel multiplier, but would also be useful for other pipelined systems. The adder is compared with a pipelined ripple-carry adder having a triangular structure and the nonpipelined form of the carry look-ahead adder and is shown to possess the advantages of small stage delay and short flush time.
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A pipelined carry look-ahead adder is described which is particularly suitable for use with a pipelined parallel multiplier, but would also be useful for other pipelined systems. The adder is compared with a pipelined ripple-carry adder having a triangular structure and the nonpipelined form of the carry look-ahead adder and is shown to possess the advantages of small stage delay and short flush time.
Key concepts: Adder, Carry-save adder, Carry (investment), Serial binary adder, Computer science, Look-ahead, Arithmetic, Parallel computing