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Editing adder
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− | + | An '''adder''' (sometimes called a '''summer''') is a [[digital circuit]] that adds two ''N''-bit numbers and generates an ''N''-bit number. In addition to generating a sum, adders often also generate an [[overflow flag]] and a [[carry flag]]. Adders are used in many parts of the [[microprocessor]] such as the [[ALU]], [[program counter|PC]], [[counters]], calculating [[effective addresses]] and table indices, multipliers, filters, and in various other components. | |
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== Basic design == | == Basic design == | ||
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===== Brent-Kung adder ===== | ===== Brent-Kung adder ===== | ||
{{main|Brent-Kung adder}} | {{main|Brent-Kung adder}} | ||
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===== Han-Carlson adder ===== | ===== Han-Carlson adder ===== | ||
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{{main|Dadda tree}} | {{main|Dadda tree}} | ||
{{empty section}} | {{empty section}} | ||
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[[Category:Adders]] | [[Category:Adders]] |