In theory the RS-232 spec requires a certian amount of safety built in,
such as short circuit current, ESD, etc.  I wouldn't worry about it too
much unless you have a big problem with static electricity there.

-Adam

Colin Constant wrote:

> 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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