00327nam a2200121Ia 4500008004100000100001900041245007000060250000800130260002900138260000900167300000800176650002100184221231s9999    xx            000 0 und d  aAyala, Kenneth 0a8051 Microcontroller  Architecture  Programming and Application  a2nd  bPenram International PUB  c1996  a368  aComputer Science