US PATENT SUBCLASS 708 / 710
.~.~.~.~.~.~ Carry look-ahead

Current as of: June, 1999
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708 /   HD   ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

100  DF  ELECTRICAL DIGITAL CALCULATING COMPUTER {10}
200  DF  .~ Particular function performed {26}
490  DF  .~.~ Arithmetical operation {27}
670  DF  .~.~.~ Addition/subtraction {11}
700  DF  .~.~.~.~ Binary {6}
706  DF  .~.~.~.~.~ Parallel {5}
710.~.~.~.~.~.~ Carry look-ahead {3}
711  DF  .~.~.~.~.~.~.~> Slice block having block ripple
712  DF  .~.~.~.~.~.~.~> Slice block having block look-ahead
713  DF  .~.~.~.~.~.~.~> Tree structured logic blocks

DEFINITION

Classification: 708/710

Carry look-ahead:

(under subclass 706) Subject matter wherein the addition or subtraction is performed by a circuit which predicts the final carry from propagate and generate signals supplied by partial adders.

SEE OR SEARCH THIS CLASS, SUBCLASS:

712, for the carry-out signals of the blocks.