Acta scientiarum naturalium Universitatis Pekinensis
WU Ke1, GAN Xuewen, ZHAO Baoying
An improved conditional carry selection (CCS) circuit is proposed in this paper. The new circuit is compared with the conventional conditional carry selection structure for a 4-bit adder. The two circuits were simulated by SPICE under the same condition and the results show that the propagation time of carry and sum (C3 and S3)of 4-bit adder are reduced 34.39% and 33.95%, respectively.
WU Ke,GAN Xuewen,ZHAO Baoying. An Improvement on Carry Chain of Conditional Carry Selection[J].Acta scientiarum naturalium Universitatis Pekinensis, 2006, 42(3): 371-374.
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