A reduced area scheme for carry-select adders

@inproceedings{Tyagi1990ARA,
  title={A reduced area scheme for carry-select adders},
  author={Akhilesh Tyagi},
  booktitle={ICCD},
  year={1990}
}
This paper proposes a new reduced-area carry-select scheme where the second copy of the carry-chain is substituted by an ‘or’ gate per bit position. Replacing the ripple-carry blocks with parallel-prefix blocks results in a select-prefix adder, which has a slightly better area and time than a parallel-prefix adder. 
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