Interfaces: RS-232-C B 136.7770-140jIW 

C a m p b e 1 1, Joe: The R-S-232jtwohundredthirtytwoj-
Solution. jIllustr.jBerkeley, 
Paris, Düsseldorf: Sybex (1984). 
XIV, 194 S. SO 
(~ybex computer Books. 0-140.)