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A Novel Ripple/Carry Lookahead Hybrid Carry Select Adder Architecture
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 70 - Number 27 |
| Year of Publication: 2013 |
| Authors: Lakshmesha J, K. R. Usha Rani |
10.5120/12237-8416
|
Lakshmesha J, K. R. Usha Rani . A Novel Ripple/Carry Lookahead Hybrid Carry Select Adder Architecture. International Journal of Computer Applications. 70, 27 ( May 2013), 5-9. DOI=10.5120/12237-8416
Abstract
In this paper, two general architectures of Carry Select Adder (CSA) have been introduced for high speed addition. These CSA architectures utilize the hybridized structure of Carry Lookahead Adder (CLA) and Ripple Carry Adder (RCA). In these architectures the critical path delay has been reduced by reducing the number of multiplexer stages. The proposed designs are compared with regular CSA based on RCA. The second architecture showed 11. 3%, 3. 9% improvement in delay and an overhead of 13% in area.
References
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