On Mon, Oct 04, 1999 at 01:55:30PM -0400, Dave McGuire wrote:
> >> Indeed what it all boils down to is that a logic "1" value is
> >> represented by a voltage between +3 and +25 VDC, and a logic "0"
> >> value is represented by a voltage between -3 and -25 VDC.
> 
>   Umm, I believe those levels are inverted.  A "1" is represented by the
> negative voltage, and a "0" was represented by the positive.  That stuck in my
> mind from way back because it's...well, inverted. :-)

That's correct.

  -jm