[ On Monday, October 4, 1999 at 18:05:39 (-0400), James Sharp wrote: ]
> Subject: Re: Behavior of DTR changed between 1.3.3 and 1.4.1???
>
> On Mon, 4 Oct 1999, Jukka Marin wrote:
> 
> > 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.
> 
> Just use the phrase "mark one off negative"...its a quick way of
> remembering it.

Indeed -- I mis-transcribed the description in the book and didn't even
think twice about it -- or compare my transcription with the original!  :-(

-- 
							Greg A. Woods

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