nand2tetris/projects/01/Xor.hdl

// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/01/Xor.hdl

/**
 * Exclusive-or gate:
 * out = not (a == b)
 */

CHIP Xor {
    IN a, b;
    OUT out;

    PARTS:
    // Put your code here:
    Nand(a=a, b=b, out=outz);
    Nand(a=a, b=outz, out=outx);
    Nand(a=b, b=outz, out=outy);
    Nand(a=outx, b=outy, out=out); 
}