The talk here recently about RS-232 breakout devices convinced me that I
really should build one of those.  I thought, to start, I'd just make a
board with a DB9 connector and a header.  Then I got to worrying (about the
computer this would be attached to).

Input pins:  should I put resistors in series to protect the computer from
ESD?

Output pins:  should I put resistors in series just in case the outputs get
connected to ground?

Ground:  Do I need to worry about the RS-232 ground getting connected to say
+5V.  It seems like this shouldn't hurt anything, but I'd like to be sure
:-)

Thanks folks,
Colin

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