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

 - 7th.  
 - New Delhi,   Tata McGraw Hill,   c2011. 
 - xxi, 682p. ;  ill. ;  24 cm.  
<br/><br/><label>ISBN: </label>9780070141704 
<br/><br/><label>LC Class. No.: </label>ACC. 18062-18063 
<br/><br/><label>Dewey Class. No.: </label>621.39519