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O que (quem) é lookahead - definição
Lookahead carry unit
LOGICAL UNIT IN DIGITAL CIRCUIT DESIGN USED TO DECREASE CALCULATION TIME IN ADDER UNITS
Lookahead Carry Unit; 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
![[[Logic gate]] implementation of a 4-bit carry lookahead adder.](https://commons.wikimedia.org/wiki/Special:FilePath/Four bit adder with carry lookahead.svg?width=200 "[[Logic gate]] implementation of a 4-bit carry lookahead adder.")
![A partial [[full adder]], with propagate and generate outputs.](https://commons.wikimedia.org/wiki/Special:FilePath/Partial Full-Adder.svg?width=200 "A partial [[full adder]], with propagate and generate outputs.")
ARITHMETIC LOGIC CIRCUIT
Manchester carry chain; Carry lookahead adder; Carry Look-Ahead Adder; Fast adder; Full carry look ahead; Full carry look ahead adder; Full carry lookahead adder; Full carry look-ahead adder; Full carry look-ahead; Full carry lookahead; Carry look-ahead adder; Carry Lookahead Adder; Block carry-lookahead; Carry-lookahead generator; Carry-lookahead addition; Manchester full-adder; Manchester full adder; Manchester carry-chain 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.
LALR parser generator
PROGRAM THAT GENERATES LALR PARSERS OR COMPILERS FROM SOURCE FILES
A lookahead LR parser (LALR) generator is a software tool that reads a BNF grammar and creates an LALR parser which is capable of parsing files written in the computer language defined by the BNF grammar. LALR parsers are desirable because they are very fast and small in comparison to other types of parsers.
