     " SD -"    "    2011"
http://cxem.net/mc/mc51.php
     ( e)
SD_Player_v1_SMD.pcb -         P-CAD2006   .   ,    , ..      
SD_Player.pdf -             
SD_Player_v2_one_layer.pcb -         P-CAD2006    .   ,     (  )
SD_Player_v2.pdf -             