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From: Dave Higton <dave@davehigton.me.uk>
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Direct digital I/O ?
Date: Sat, 02 Jul 2016 19:43:37 +0100
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In message <nl918d$qgl$2@dont-email.me>
          Tauno Voipio <tauno.voipio@notused.fi.invalid> wrote:

>On 2.7.16 20:07, Martin Gregorie wrote:
>> On Sat, 02 Jul 2016 19:22:00 +0300, Tauno Voipio wrote:
>>
>>> Your memory may have developed a drop here: The DM 160 is just a digital
>>> on-off indicator. The tuning indicators have been some other DM:s with
>>> analog pattern display.
>>>
>> Then I've never seen a DM-160, only the magic-eye tuning indicators on
>> valve radios. From the up-thread context I thought they were called
>> DM-160s - my mistake.
>
>Look for DM70 or DM71, for example.

About fifty years afo I made a battery portable tape recorder that used
a DM71 (I think) as a recording level indicator - this was another use
case for "magic eye" valves.

Dave