Campbell, Joe,   1944- <br/><br/>
The RS-232 solution /  [Book]. 
Joe Campbell.  
 - 2nd ed. 
 - San Francisco :   Sybex,   1989. 
 - xvi, 196 p. :   ill. ;   23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0895884887 9813005122 
<br/><br/><label>LCCN: </label>89060895 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer interfaces--Standards--United States.<br/>Computer interfaces.