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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:

+    // Put your code here:

+    Not (in=a, out=nota);

+    Not (in=b, out=notb);

+    And (a=a, b=notb, out=aandnotb);

+    And (a=nota, b=b, out=notaandb);

+    Or (a=aandnotb, b=notaandb, out=out);

+}