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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/Or.hdl

+

+ /**

+ * Or gate:

+ * out = 1 if (a == 1 or b == 1)

+ *       0 otherwise

+ */

+

+CHIP Or {

+    IN a, b;

+    OUT out;

+

+    PARTS:

+    // Put your code here:

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

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

+    Nand (a=nota, b=notb, out=out);

+}