Leach,P.Donald. <br/><br/>
Digital principles & applications 

 - 5th ed 
 - New Delhi  Tata MacGraw-Hill  1995 
 - x, 638p.  PB  24cm. 
<br/><br/><label>ISBN: </label>0070472580 
<br/><br/><label>Dewey Class. No.: </label>621.381958  / LEA