TY  - BOOK
AU  - Tokheim, Roger, L 
TI  - Digital electronics: principles and applications 
SN  - 0-07-463937-4 
U1  - 621.381 5 TOK  
PY  - 2001///
CY  - Tata mcgraw hill 
PB  - New Delhi 
KW  - ELECTRONICS
ER  -