Method and apparatus for a multi-purpose domino adder

Details Method and apparatus for a multi-purpose domino adder Method and apparatus for a multi-purpose domino adder

2005-01-04

2005-01-04

Ngo, Chuong Dinh (Department: 2124)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S714000

Reexamination Certificate

active

06839729

ABSTRACT:
A method and apparatus for a multi-purpose adder is described. The method includes calculation of an initial sum for each corresponding N-bit portion of a received addend signal and a received augend signal. Generation of an initial carryout signal for each calculated initial sum is then performed. Next, an intermediate sum for each group of M-initial sums according to a respective initial carryout value of each initial sum is then generated. Once generated, an intermediate carryout value for each generated intermediate sum is then calculated. Finally, a final sum is calculated from the intermediate sums generated according to a respective intermediate carryout of each intermediate sum.

REFERENCES:
patent: 5701504 (1997-12-01), Timko
patent: 5719803 (1998-02-01), Naffziger
patent: 5905667 (1999-05-01), Lee
patent: 6003059 (1999-12-01), Bechade

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