00317nam a2200133Ia 4500008004100000041000800041082001600049100001300065245004600078260002200124300000800146365001600154700001300170230718s9999    xx            000 0 und d  aeng  a004.16bHAY  aHayes J.  aDigital System Design And Microprocessors  c1989bMcgraw Hill  a786  cRs.b445.75  aHayes J.