// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: tools/builtIn/FullAdder.hdl

/**
 * Full adder. Computes sum, the least significant bit of 
 * a + b + c, and carry, the most significant bit of a + b + c.
 */

CHIP FullAdder {

    IN  a, b, c;
    OUT sum,     // LSB of a + b + c
        carry;   // MSB of a + b + c

    BUILTIN FullAdder;
}