TY  - BOOK
AU  - Axelson , Jan.
TI  - Serial port complete : programming and circuits for rs. 232 and rs.485 links and networks
SN  - 8187972033 
U1  - 004.77 
PY  - 1994///
CY  - Mumbai
PB  - Prentice Hall Of India
KW  - Data processing computer science
ER  -