Campbell, Joe. <br/><br/>
Rs-232 solution / 
By Joe Campbell. 
 - 2nd ed. 
 - New Delhi :  BPB Publications ,  1990. 
 - xvi,196p. ;  PB  23.1 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>The interface<br/>Logic levels<br/>The apple macintosh
<br/><br/><label>Dewey Class. No.: </label>006.62  / CAMJ