A 8 Way DMux just as confusing

Activity 16 : An 8 Way DMUX

Should be just 2 4 Way DMux or 8 DMux.

/**

 * 8-way demultiplexor.

 *                                                210

 * {a,b,c,d,e,f,g,h} = {in,0,0,0,0,0,0,0} if sel==000

 *                     {0,in,0,0,0,0,0,0} if sel==001

 *                     {0,0,in,0,0,0,0,0} if sel==010

 *                     {0,0,0,in,0,0,0,0} if sel==011

 *                     {0,0,0,0,in,0,0,0} if sel==100

 *                     {0,0,0,0,0,in,0,0} if sel==101

 *                     {0,0,0,0,0,0,in,0} if sel==110

 *                     {0,0,0,0,0,0,0,in} if sel==111                                            

 */

So sel 2 selects half then sel 1 splits in one more time