P. DONALD   LEACH  GOUTAMSAHA <br/><br/>
DIGITAL PRINCIPLES AND APPLICATIONS SEVENTH EDITION 

 - NEW DELHI  Tata McGraw-Hill  2011 
<br/><br/><label>ISBN: </label>978-0-07-014170-4 
<br/><br/><label>Dewey Class. No.: </label>005.1  / LEA/D