summaryrefslogtreecommitdiff
path: root/chips/DMux4Way.hdl
blob: 18b725d0c840c795a4736ee9d3d470de1597e3df (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
// 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:
    DMux (in=in, sel=sel[1], a=e, b=f);
    DMux (in=e, sel=sel[0], a=a, b=b);
    DMux (in=f, sel=sel[0], a=c, b=d);
}