TY  - BOOK
AU  -  Leach Donald P. 
AU  - Malvino Albert Paul
TI  - Digital principles and applications
SN  - 978-0-07=060175-8 
U1  - 621.381 
PY  - 2010///
CY  - New delhi
PB  -  Tata Mcgraw Hill, 
KW  - Engineering
ER  -