Re: Testing a serial port

[russotto@grace.speakeasy.net (Matthew T. Russotto)]

In article <1i446co.16i2a4g1iik9pmN%jim@magrathea.plus.com>,
Jim <jim@magrathea.plus.com> wrote:
>Michael J. Mahon <mjmahon@aol.com> wrote:
>
>> > Pictures of said doohicky here:
>> > 
>> > <http://www.ursaminorbeta.co.uk/doohicky1.jpg>
>> > <http://www.ursaminorbeta.co.uk/doohicky2.jpg>
>> > <http://www.ursaminorbeta.co.uk/doohicky3.jpg>
>> 
>> Cute.  Any idea what that 8-pin DIP is?  1984 seems a
>> little early for a microcontroller that small...
>
>No idea, although the guy who gave it to me thinks it might have been
>used, and I quote, "...to control something dreadfully medical."

It's a dual differential line receiver.  So it was probably an RS-232
to RS-422 converter.
-- 
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