At 08:52 AM 3/3/98 +0000, you wrote:
>        Hi.
>        In short, yes, if Murphy is hanging around. But let us see the
reasons.
>        If printer and computer have not the same ground, they may be at
>different voltages, or simply one of them has some electrostatic charge.
>When you introduce the connector, nobody assures you that gnd will go in
>first (unless a very well built cable, taking these things into
consideration).
>Therefore, during some tenths of a second, there may be a great current
>flowing through signal pins while the two devices exchange electrons, which
>will destroy that or those signals.
>        If your system is well grounded, not a great risk; I do it all
>the time with those I use.
>
How do I know if my system is well grounded?

Thanks,

Changhsu Liu