// This file is part of the materials accompanying the book 

// "The Elements of Computing Systems" by Nisan and Schocken, 

// MIT Press. Book site: www.idc.ac.il/tecs

// File name: projects/01/DMux8Way.hdl



/**

 * 8-way demultiplexor.  The 3-bit sel input selects the output to which 

 * the in input will be channeled: (000 to a, 001 to b, ..., 111 to h).

 * The other outputs are set to 0.

 */



CHIP DMux8Way {



    IN  in, sel[3];

    OUT a, b, c, d, e, f, g, h;



    PARTS:

    DMux(in=in, a=abcd, b=efgh, sel=sel[2]);

    DMux4Way(in=abcd, a=a, b=b, c=c, d=d, sel=sel[0..1]);

    DMux4Way(in=efgh, a=e, b=f, c=g, d=h, sel=sel[0..1]);

}