Hellerman, Herbert <br/><br/>
Digital computer system principles 

 - Ed.2 
 - New Delhi  Tata Mc Graw - Hill  1973 
 - 466p. 
<br/><br/><label>Subjects--Index Terms: </label>Computer system 
<br/><br/><label>Universal Decimal Class. No.: </label>004  / HEL