00522nam a2200181Ia 4500003000900000008004100009020001800050040001600068080001500084100001500099245009900114260003900213300001500252650002400267650001900291650001400310650001600324IN-BaIIA211028s9999    xx            000 0 eng d  a81-87972-03-3  cIIA Library  a681.3bAXE  aAxelson, J 0aSerial port completebprogramming and circuits for RS 232 & RS 485 links netwroks.cJ. Axelson  aMumbaibPenram Internationalc1998  axiv, 306p.  aNetwork Programming  aPC-Programming  aProtocols  aSerial Port