look-ahead carry adder

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• Carry look-ahead adder — A carry look ahead adder is a type of adder used in digital logic. It can be contrasted with the simpler, but usually slower, ripple carry adder ( see adder for detail on ripple carry adders ). A ripple carry adder works in the same way as pencil …   Wikipedia

• Carry-Look-Ahead-Adder — Der Paralleladdierer mit Übertragsvorausberechnung bzw. Carry Look Ahead Addierer (kurz: CLA Addierer) ist ein elektronischer Baustein zur Addition mehrstelliger Binärzahlen (siehe auch Addierwerk). Der CLA Addierer addiert zwei n stellige… …   Deutsch Wikipedia

• Carry — or carrying may refer to: *Carry (arithmetic), when a digit becomes bigger than limit and the extra is moved to the left **Carry flag, the equivalent in calculation in a computer *Carrying (basketball), a rule breach in basketball *Carry… …   Wikipedia

• Carry-lookahead adder — 4 bit adder with carry lookahead A carry lookahead adder (CLA) is a type of adder used in digital logic. A carry lookahead adder improves speed by reducing the amount of time required to determine carry bits. It can be contrasted with the simpler …   Wikipedia

• Carry-save adder — MotivationA carry save adder is a type of digital adder, used in computer microarchitecture to compute the sum of three or more n bit numbers in binary. It differs from other digital adders in that it outputs two numbers of the same dimensions as …   Wikipedia

• Adder (electronics) — In electronics, an adder or summer is a digital circuit that performs addition of numbers.In modern computers adders reside in the arithmetic logic unit (ALU) where other operations are performed.Although adders can be constructed for many… …   Wikipedia

• Adder-subtracter — In digital circuits, an adder subtracter is a circuit that is capable of adding or subtracting numbers (in particular, binary).Below is a circuit that does adding or subtracting depending on a control signal.However, it is possible to construct a …   Wikipedia

• Carry-Bypass-Adder — Das Addiernetz bildet aus den Summanden a3..0 und b3..0 die Summe s3..0, carry in und carry out ermöglichen die Kaskadierung des Schaltnetzes Das Addierwerk ist die Hauptkomponente des Rechenwerks einer CPU. Das Addierwerk ermöglicht die Addition …   Deutsch Wikipedia

• Lookahead Carry Unit — A Lookahead Carry Unit (LCU) is a logical unit in digital circuit design used to decrease calculation time in adder units and used in conjunction with carry look ahead adders (CLAs).16 bit adderBy combining four 4 bit CLAs, a 16 bit adder can be… …   Wikipedia

• Kogge-Stone Adder — The Kogge Stone adder is a parallel prefix form carry look ahead adder. It generates the carry signals in O(log n) time, and is widely considered the fastest adder design possible. It is the common design for high performance adders in… …   Wikipedia

• Ling adder — In electronics, an adder is a combinatorial or sequential logic element which computes the n bit sum of two numbers. The family of Ling adders is a particularly fast adder and is designed using H. Ling s equations and generally implemented in… …   Wikipedia