00282nam a2200109Ia 4500100002700000654001200027245005100039260004700090082001500137300000800152546001200160  aBelove/A/ Schilling/D   adigital  aDigital and analog system circuits and devices  bInternational student ed.aSingaporec1986  a621.3bBEL  a465  aENGLISH