Putman, Byron W. <br/><br/>
RS-232 simplified :  everything you need to know about connecting, interfacing, and troubleshooting peripheral devices /  [Book]. 
Byron W. Putman. 
 - Englewood Cliffs, N.J. :   Prentice-Hall,   1987. 
 - xii, 190 p. :   ill. ;   24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0137834993 
<br/><br/><label>LCCN: </label>86018701 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer interfaces--Standards--United States.<br/>Computer interfaces.