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diff --git a/projects/01/Mux16.hdl b/projects/01/Mux16.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/Mux16.hdl
+
+/**
+ * 16-bit multiplexor: 
+ * for i = 0..15 out[i] = a[i] if sel == 0 
+ *                        b[i] if sel == 1
+ */
+
+CHIP Mux16 {
+    IN a[16], b[16], sel;
+    OUT out[16];
+
+    PARTS:
+    Mux(a=a[0], b=b[0], sel=sel, out=out[0]);
+    Mux(a=a[1], b=b[1], sel=sel, out=out[1]);
+    Mux(a=a[2], b=b[2], sel=sel, out=out[2]);
+    Mux(a=a[3], b=b[3], sel=sel, out=out[3]);
+    Mux(a=a[4], b=b[4], sel=sel, out=out[4]);
+    Mux(a=a[5], b=b[5], sel=sel, out=out[5]);
+    Mux(a=a[6], b=b[6], sel=sel, out=out[6]);
+    Mux(a=a[7], b=b[7], sel=sel, out=out[7]);
+    Mux(a=a[8], b=b[8], sel=sel, out=out[8]);
+    Mux(a=a[9], b=b[9], sel=sel, out=out[9]);
+    Mux(a=a[10], b=b[10], sel=sel, out=out[10]);
+    Mux(a=a[11], b=b[11], sel=sel, out=out[11]);
+    Mux(a=a[12], b=b[12], sel=sel, out=out[12]);
+    Mux(a=a[13], b=b[13], sel=sel, out=out[13]);
+    Mux(a=a[14], b=b[14], sel=sel, out=out[14]);
+    Mux(a=a[15], b=b[15], sel=sel, out=out[15]);
+}