For your leds, i think it will be better to use a led driver like this one: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=MAX7219CNG%2B-ND, this one is used for the arduinome for exemple.
For your leds, i think it will be better to use a led driver like this one: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=MAX7219CNG%2B-ND, this one is used for the arduinome for exemple.