Seyer, Martin D. <br/><br/>
RS-232 made easy :  connecting computers, printers, terminals, and modems /  [Book]. 
Martin D. Seyer. 
 - 2nd ed. 
 - Englewood Cliffs, New Jersey :   Prentice-Hall,   1991 
 - xii, 436 p. :   ill. ;   24 cm. 
<br/><br/> Appendices: p. 99-431.  Includes index. 
<br/><br/><label>ISBN: </label>0137498543 
<br/><br/><label>LCCN: </label>90026516 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer interfaces--Standards--United States.