TY  - BOOK
AU  - Leach,Donald P
AU  - Malvino,Albert Paul.
TI  - Digital : principles and applications 
SN  - 0070472580 
U1  - 621.395 
PY  - 2007///
CY  - New Delhi
PB  - Tata Mcgraw Hill
KW  - Applied physics
ER  -