carry-lookahead adder technical , CLA (Abkürzung)

Carry-lookahead adder, 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.

One might contrast ripple carry adder with a carry-lookahead adder.

To reduce the computation time, engineers devised faster ways to add two binary numbers by using carry-lookahead adders.

The Manchester carry chain is a variation of the carry-lookahead adder that uses shared logic to lower the transistor count.

The carry-lookahead adder calculates one or more carry bits before the sum, which reduces the wait time to calculate the result of the larger value bits.

Gerald Rosenberger of IBM filed for a patent on a modern binary carry-lookahead adder in 1957.

"Self-timed carry-lookahead adders" by Fu-Chiung Cheng, Stephen H. Unger, Michael Theobald.

Decoupling the carry propagation from the sum formation in this way is what elevates the performance of a carry-lookahead adder over that of a ripple carry adder.

The carry-select adder design can be complemented with a carry-lookahead adder structure to generate the MUX inputs, thus gaining even greater performance as a parallel prefix adder while potentially reducing area.