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Hack-Machine/Project 1/Xor.hdl
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// 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:
Not(in=a,out=negA);
Not(in=b,out=negB);
Nand(a=a,b=negB,out=out1);
Nand(a=b,b=negA,out=out2);
Nand(a=out1,b=out2,out=out);
}