TY  - BOOK
AU  - Leach, P Donald
TI  - Digital Principles & Applications 7th Ed
SN  - 9780070601758
U1  - 621.3815 
PY  - 2012///
CY  - New Delhi
PB  -  Tata mcGraw Hill
KW  - Electronic Communication Engineering
KW  - Digital Electronics
ER  -