// 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/1/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:

    DMux(in= in, sel=sel[1] , a=topHalf , b=botHalf );

    DMux(in= topHalf, sel=sel[0] , a=a , b=b );
    DMux(in= botHalf, sel=sel[0] , a=c , b=d );



}

/**
CHIP DMux {
    IN in, sel;
    OUT a, b;
    
    PARTS:

    Not(in=sel,out=notSel);
    And(a=in,b=notSel,out=a);
    And(a=in,b=sel,out=b);

}
*/