// 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/DMux4Way.hdl

/**
 * 4-way demultiplexor:
 * {a, b, c, d} = {in, 0, 0, 0} if sel == 00
 *                {0, in, 0, 0} if sel == 01
 *                {0, 0, in, 0} if sel == 10
 *                {0, 0, 0, in} if sel == 11
 */

CHIP DMux4Way {
    IN in, sel[2];
    OUT a, b, c, d;

    PARTS:
    // Put your code here:
	And(a=sel[0], b=sel[1], out=out1);
	And(a=in, b=out1, out=d);
	
	//Invert sel, 00 => 11
	Not(in=sel[0], out=out2);
	Not(in=sel[1], out=out3);
	And(a=out2, b=out3, out=out4);
	And(a=out4, b=in, out=a);
	
	//Output B?
	And(a=sel[0], b=out3, out=out5);
	And(a=out5, b=in, out=b);
	
	//Output C?
	And(a=sel[1], b=out2, out=out6);
	And(a=out6, b=in, out=c);
}