Seyer, Martin D. <br/><br/>
RS-232 Made Easy Connecting Computers, Printers Terminals, and Modems 
By Martin D. Seyer 
 - Second Edition 
 -  Prentice Hall Inc.  1991 
 - xii, 436 pages, 23 cm. 
<br/><br/> include appendix and index 
<br/><br/><label>ISBN: </label>0-13-1-749854-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer interfaces-Standards-United State.
<br/><br/><label>Dewey Class. No.: </label>004.6 Se8 1991