I have question, why in some arduino duemilanove in left upper corner is: PH-2A 836 and in other Arduino Duemilanove PH-2A 850 ?? What does it mean? please help I've got Duemilanove with atmega 168, i hear something about the new arduino Duemilanove with atmega 328, is it true??

Arduino Duemilanove 836 850

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