TY  - BOOK
AU  - Leach, Donald P.
AU  - Ma, Albert P. 
TI  - Digital principles and applications
SN  - 007060175
U1  - 621.395 MAL 
PY  - 2006///
CY  - New Delhi
PB  - Tata McGraw Hill
N1  - Includes bibliographical references
ER  -