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

 - NEW DELHI  Tata McGraw-Hill  2011 
<br/><br/><label>ISBN: </label>978-93-392-0340-5 
<br/><br/><label>Dewey Class. No.: </label>005.1  / LEA/D