Re: TI-H: The Parallel Port Link

Subject: Re: TI-H: The Parallel Port Link
From: Steve Wrobleski <s_wrobleski@foma.wsc.mass.edu>
Date: Sat, 05 Mar 1994 23:29:58 -0500
In-Reply-To: <TI-H: The Parallel Port Link>

ti-hardware@lists.ticalc.org wrote:
> 
> I blindly wrote this nonsense:
> 
> >Excellent idea! One of those two lead LEDs, with green and
> >orange chips would be perfect! Green when no data was being
> >transfered, and orange with data. Just like the Sony CD-ROM
> >drives (mine anyway).
> 
> Whoops! That would not work that simply! Of course the data not being
> transferred would not have negative polarity, so it would not work.
> But maybe a three lead LED with one connected to strobe? Yeah! I'll
> try that.
> 
> -Tim
>                                                __
>                                               /_/\
>  Tim Gerla - timg@climax.polaristel.net      / /\ \
>                                             / /\ \ \
>       Tyball Dragon -==(UDIC)==-           / / /\ \ \
>             Tyball@irc                    / / /  \ \ \
> www.geocities.com/SiliconValley/Park/1691/ /_/____\ \ \
>  TI-92, HTML, Links, POV-Ray, Fractint! /_/________\_\/\
>                                         \_\___________\/




Why not connect one of the leads of the LED to 2.5 volts or about. That
way when its at 0, current flows one way, and it flows the other when
its at 5.

References:

From: