先行进位加法

ahead adder【计】;carry lookahead adder【计】

spontaneous generation of lookahead【计】

fast-carry lookahead arithmetic【计】

fast-carry lookahead【计】

carry lookahead

lookahead logic【计】

lookahead carry block【计】

anticipated carry adder【计】;anticipatory carry adder【计】;carry lookahead adder【计】