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From: Ahem A Rivet's Shot <ste...@eircom.net>
Newsgroups: alt.folklore.computers
Subject: Re: IBM Forms Design Manual
Date: Sat, 13 Oct 2012 21:02:42 +0100
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On Sat, 13 Oct 2012 18:30:14 +0200
lawre...@gandi.cluon.com wrote:

> Ahem A Rivet's Shot <ste...@eircom.net> writes:
> 
> > On Fri, 12 Oct 2012 17:34:31 -0700 (PDT)
> > hanco...@bbs.cpcn.com wrote:
> >
> >> On Oct 12, 3:23 pm, sc...@slp53.sl.home (Scott Lurndal) wrote:
> >> > "Charles Richmond" <numer...@aquaporin4.com> writes:
> >> > >"JimP." <pongbill...@cableone.net> wrote in message
> >> >
> >> > >Jim, do they have a USB to 20 ma current loop adapter... so one can
> >> > >use an *old* teletype???   ;-)
> >> >
> >> > RS232C can be converted electrically to 20ma current loop with a
> >> > couple of discrete components.   I don't recall the details, but we
> >> > built a bunch of these in the 80's.
> >> 
> >> Wasn't there a company "black box" that made converters for such
> >> esoteric things?
> >
> > 	Yes, time was the "Black Box" catalogue was even more useful
> > than the RS one.
> 
> I remember very vividly having one of those -- I'd never in a trillion
> years consider *buying* anything from them (Their prices were

	Well not with *my* money you understand.

> outrageous), but they had a great reference section in each catalog.

	They also had good fast delivery and always had everything IME.

-- 
Steve O'Hara-Smith                          |   Directable Mirror Arrays
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