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Digital Arithmetic
book

Digital Arithmetic

by Miloš D. Ercegovac, Tomás Lang
September 2003
Intermediate to advanced content levelIntermediate to advanced
709 pages
26h 51m
English
Morgan Kaufmann
Content preview from Digital Arithmetic
Switched Carry-Ripple (Manchester) Adder
63
2.3
Reducing the Adder Delay
The delay of the carry-ripple adder can be reduced by the following four ap-
proaches:
1. Reducing the carry delay t~. This is achieved in the switched carry-ripple
(Manchester) adder.
2. Changing the linear factor n to a "smaller" factor (such as n/k or log n).
This is achieved by the carry-skip adder, the carry-lookahead adder, the
prefix adder, the carry-select adder, and the conditional-sum adder.
3. Including a completion signal so that the addition time corresponds to the
actual addition and not to the worst case.
4. Changing the number representation ...
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Publisher Resources

ISBN: 9781558607989