LED Pixel density , LED Pixel height and width , Resolution
<p>Can some one explain me the relation between 
    <strong>LED Pixel density,</strong>
    <strong>LED Pixel height and width</strong> , <strong>and
    Resolution</strong>
while creating an emulator
in detailed way.. 
and again while launching 
Default:   SkinSize, Density;
Scale density to realsize ?</p>
