00408nam a2200157Ia 4500008004100000020002200041082001600063100003000079245004000109250001200149260001200161260003400173260000900207300001000216650002400226221231s9999    xx            000 0 und d  a978-93-392-0340-5  a621.395 LEA  aLeach, Donald .P and etal 0aDigital Principles and Applications  a8th ed.  aChennai  bMcGraw Hill Education PVT LTD  c2018  a705p.  aInformation Science