00317nam a2200121 a 450000500170000002000150001708200160003210000210004824500300006926000350009930000230013449000380015720251203110732.0  a8129706806  a004.22bWIL  aWilkinson, Barry  aEssence of Digital Design  aDelhibPearson Educationc2004  ax,227p.c28 cm. PB  aThe Essence of Engineering Series