which products of microsoft is giving its biggest revenues :

The above chart  compares Microsoft's revenues from its 13 segments against  its product sales  from Lumia phones , Non Lumia phones and Xbox consoles .The 1st chart clearly shows how " windows "sales  were  its main source of revenue till 2012, after which  devices and consumer licensing along with gaming and entertainment contributed significantly to its revenues. The second chart compares Microsoft's product sales from Lumia  and non Lumia phones including Xbox