About: Dadda multiplier

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The Dadda multiplier is a hardware binary multiplier design invented by computer scientist Luigi Dadda in 1965. It uses a selection of full and half adders to sum the partial products in stages (the Dadda tree or Dadda reduction) until two numbers are left. The design is similar to the Wallace multiplier, but the different reduction tree reduces the required number of gates (for all but the smallest operand sizes) and makes it slightly faster (for all operand sizes). Dadda and Wallace multipliers have the same three steps for two bit strings and of lengths and respectively:

Attributes	Values
rdf:type	yago:Artifact100021939 yago:Circuit103033362 yago:Device103183080 yago:ElectricalDevice103269401 yago:Instrumentality103575240 yago:Object100002684 yago:PhysicalEntity100001930 yago:Whole100003553 yago:WikicatDigitalCircuits
rdfs:label	Dadda-Tree-Multiplizierer (de) Dadda multiplier (en)
rdfs:comment	Ein Dadda-Tree-Multiplizierer ist ein Multiplizierer, der sich durch eine vergleichsweise geringe Laufzeit und eine geringe Anzahl von logischen Gattern auszeichnet. Er ist nach seinem Erfinder Luigi Dadda benannt, welcher diesen Multiplizierer 1965 vorstellte. (de) The Dadda multiplier is a hardware binary multiplier design invented by computer scientist Luigi Dadda in 1965. It uses a selection of full and half adders to sum the partial products in stages (the Dadda tree or Dadda reduction) until two numbers are left. The design is similar to the Wallace multiplier, but the different reduction tree reduces the required number of gates (for all but the smallest operand sizes) and makes it slightly faster (for all operand sizes). Dadda and Wallace multipliers have the same three steps for two bit strings and of lengths and respectively: (en)
foaf:depiction
dcterms:subject	Multiplication Arithmetic logic circuits 1965 in computing Computer arithmetic 1965 introductions
Wikipage page ID	4181062 (xsd:integer)
Wikipage revision ID	1081809016 (xsd:integer)
Link from a Wikipage to another Wikipage	Fused multiply–add Modular arithmetic Logical conjunction Luigi Dadda BKM algorithm Multiplication Adder (electronics) Arithmetic logic circuits 1965 in computing Kochanski multiplication Logic gate Computer arithmetic 1965 introductions Binary multiplier Booth's multiplication algorithm Wallace tree Wallace multiplier
Link from a Wikipage to an external page	https://web.archive.org/web/20180703001722/http:/www.quadibloc.com/comp/cp0202.htm http://www.quadibloc.com/comp/cp0202.htm
sameAs	Dadda multiplier Dadda multiplier Dadda multiplier Dadda multiplier Dadda multiplier
dbp:wikiPageUsesTemplate	dbt:Cite_web dbt:Reflist dbt:Short_description
thumbnail	wiki-commons:Special:FilePath/Full-adder.svg?width=300
has abstract	Ein Dadda-Tree-Multiplizierer ist ein Multiplizierer, der sich durch eine vergleichsweise geringe Laufzeit und eine geringe Anzahl von logischen Gattern auszeichnet. Er ist nach seinem Erfinder Luigi Dadda benannt, welcher diesen Multiplizierer 1965 vorstellte. (de) The Dadda multiplier is a hardware binary multiplier design invented by computer scientist Luigi Dadda in 1965. It uses a selection of full and half adders to sum the partial products in stages (the Dadda tree or Dadda reduction) until two numbers are left. The design is similar to the Wallace multiplier, but the different reduction tree reduces the required number of gates (for all but the smallest operand sizes) and makes it slightly faster (for all operand sizes). Dadda and Wallace multipliers have the same three steps for two bit strings and of lengths and respectively: 1. * Multiply (logical AND) each bit of , by each bit of , yielding results, grouped by weight in columns 2. * Reduce the number of partial products by stages of full and half adders until we are left with at most two bits of each weight. 3. * Add the final result with a conventional adder. As with the Wallace multiplier, the multiplication products of the first step carry different weights reflecting the magnitude of the original bit values in the multiplication. For example, the product of bits has weight . Unlike Wallace multipliers that reduce as much as possible on each layer, Dadda multipliers attempt to minimize the number of gates used, as well as input/output delay. Because of this, Dadda multipliers have a less expensive reduction phase, but the final numbers may be a few bits longer, thus requiring slightly bigger adders. (en)
prov:wasDerivedFrom	wikipedia-en:Dadda_multiplier?oldid=1081809016&ns=0
page length (characters) of wiki page	9204 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Dadda_multiplier
is Link from a Wikipage to another Wikipage of	List of computer scientists Deaths in October 2012 Timeline of electrical and electronic engineering Luigi Dadda Computer engineering compendium Dadda Adder Dadda Multiplier Dadda Tree Dadda Tree Adder Dadda Tree Multiplier Dadda adder Dadda tree adder Dadda tree multiplier Binary multiplier Booth's multiplication algorithm Wallace tree Multiplication algorithm Dadda multipliers Dadda tree
is Wikipage redirect of	Dadda Adder Dadda Multiplier Dadda Tree Dadda Tree Adder Dadda Tree Multiplier Dadda adder Dadda tree adder Dadda tree multiplier Dadda multipliers Dadda tree
is foaf:primaryTopic of	wikipedia-en:Dadda_multiplier

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