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

 - 7th ed. 
 -  McGraw-Hill Education Pvt. Ltd.  2011 
 - xxi, 682 
<br/><br/><label>ISBN: </label>9780070141704 
<br/><br/><label>Dewey Class. No.: </label>Column-9