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- Adders (electronics)

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).

Carry-lookahead adder

A carry-lookahead adder (CLA) or fast adder is a type of electronics adder used in digital logic. A carry-lookahead adder improves speed by reducing the amount of time required to determine carry bits

Serial binary adder

The serial binary adder or bit-serial adder is a digital circuit that performs binary addition bit by bit. The serial full adder has three single-bit inputs for the numbers to be added and the carry i

Carry-skip adder

A carry-skip adder (also known as a carry-bypass adder) is an adder implementation that improves on the delay of a ripple-carry adder with little effort compared to other adders. The improvement of th

Sklansky adder

No description available.

Adder–subtractor

In digital circuits, an adder–subtractor is a circuit that is capable of adding or subtracting numbers (in particular, binary). Below is a circuit that adds or subtracts depending on a control signal.

Subtractor

In electronics, a subtractor – a digital circuit that performs subtraction of numbers – can be designed using the same approach as that of an adder. The binary subtraction process is summarized below.

Carry-save adder

A carry-save adder is a type of digital adder, used to efficiently compute the sum of three or more binary numbers. It differs from other digital adders in that it outputs two (or more) numbers, and t

Ling adder

In electronics, a Ling adder is a particularly fast binary adder designed using H. Ling's equations and generally implemented in BiCMOS. Samuel Naffziger of Hewlett Packard presented an innovative 64

Brent–Kung adder

The Brent–Kung adder (BKA or BK), proposed in 1982, is an advanced binary adder design, having a gate level depth of .

Carry-select adder

In electronics, a carry-select adder is a particular way to implement an adder, which is a logic element that computes the -bit sum of two -bit numbers. The carry-select adder is simple but rather fas

Kogge–Stone adder

In computing, the Kogge–Stone adder (KSA or KS) is a parallel prefix form carry look-ahead adder. Other (PPA) include the Brent–Kung adder (BKA), the (HCA), and the fastest known variation, the (STA).

Adder (electronics)

An adder, or summer, is a digital circuit that performs addition of numbers. In many computers and other kinds of processors adders are used in the arithmetic logic units (ALUs). They are also used in

Additron tube

The Additron was an electron tube designed by Dr. Josef Kates, circa 1950, to replace the several individual electron tubes and support components required to perform the function of a single bit digi

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