00317nam a2200121Ia 4500008004100000100001900041245007000060250000600130260002100136260000900157300000800166650002100174221231s9999    xx            000 0 und d  aAyala, Kenneth 0a8051 Microcontroller  Architecture  Programming and Application  a3  bThomson Learning  c2007  a480  aComputer Science