Subject: Re: Behavior of DTR changed between 1.3.3 and 1.4.1???
To: None <email@example.com>
From: Greg A. Woods <firstname.lastname@example.org>
Date: 10/06/1999 16:08:35
[ 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
+1 416 218-0098 VE3TCP <email@example.com> <robohack!woods>
Planix, Inc. <firstname.lastname@example.org>; Secrets of the Weird <email@example.com>