Campbell Joe <br/><br/>
The RS-232 solution 

 - 2nd 
 - New Delhi  BPB publications  1990 
 - xvi;196p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Interface<br/>Interfacing modems<br/>Interfacers toolkit
<br/><br/><label>Dewey Class. No.: </label>005.102 8  / CAM