On Tue, May 20, 2003 at 04:24:22PM -0500, Bill Richman wrote:
> All I know is they were used in counters. These have a binary to
> 1-of-10 decoder made out of photoresistors and neon bulbs (!) in
> the black box. It's not a HV supply like he guessed.
>
> It should be possible to make a clock but he'll have to modify some
> of them to reset before the usual cycle of 0-9. Resetting at
> 23:59:59 is probably harder and would take some kind of external
> logic.
>
> They already have a feedback to make them reset after 9 instead of
> counting to 15 - it just has to be modified.
>
> On the other hand if he wants to make a clock, nixies are cheap
> and it might be better to just leave the counter modules as-is and
> use some logic more suited to counting the time (which is not
> 10-based).
I have a tube digital clock, which I made out of a Beckman Berkeley
counter. The counter uses decade modules, each with four tubes used as
flip-flops, and ten neon lamps which display the count on a numbered 0-9
plasic window. The HP modules work pretty much the same way as the
Beckman tube modules, although the binary to decimal decoding scheme is
different in that it uses light and photoresistors instead of resistor
networks.
http://www.mindspring.com/~jforbes2/tubeclock/index.html
shows my clock.
The counter modules could possibly be used as the basis for a tube
computer...maybe. I have a bunch of extra modules. I believe my
brother has the schematic for the HP counter that uses the nixie
modules, and he has one of the HP counters.
--
Jim
Visit the Selectric Typewriter Museum!
http://www.mindspring.com/~jforbes2
He/they have a couple of pages related to Nixie Tubes and
building clocks from them.
Display and counting tubes
http://www.electricstuff.co.uk/count.html
Build a Nixie Tube Digital Clock
http://www.electricstuff.co.uk/nixclock.html
At 02:03 PM 5/22/03 +0100, you wrote:
>Those picture are all very interesting, but it's the results - or even
>better the doing - that is much more interesting to see...
>
>http://www.electricstuff.co.uk/esd.html!
>
>paul
>
>-----Original Message-----
>From: Roger Merchberger [mailto:zmerch@30below.com]
>Sent: 21 May 2003 18:04
>To: cctalk(a)classiccmp.org
>Subject: Re: Revengish URL
>
>
>Rumor has it that John Lawson may have mentioned these words:
> > This is diabolical - evil - reprehensible - unconconsionable -
> >sick/twisted - dangerous - damn funny.
> >
> >http://www.fiftythree.org/etherkiller/
> >
> >For those who eschew browsers - it's a series of pictures of all the usual
> >computer and networking connectors - - - spliced onto AC Mains cords. ;{}
>
>They missed one -- True Story:
>
>I had a lady walk into our store and said she needed a special cable for
>her Mac, but didn't know exactly what it was. I showed her several cables
>from our stock, and she verified the port this cable was supposed to plug
>into was the USB port, but she was *positive* the other end was supposed to
>plug into the wall.
>
>I was [evil ascii grafic follows]:
>
>===>||<===
>
>*this close* to saying "I'd be *more* than happy to wire that up for you,
>ma'am!!!"
>
>Imagining her plugging *that* bastage in... that gave all of us here at the
>shop quite a chuckle for a good long time...
>
>Laterz,
>Roger "Merch" Merchberger
>
>--
>Roger "Merch" Merchberger -- sysadmin, Iceberg Computers
>zmerch(a)30below.com
>
>What do you do when Life gives you lemons,
>and you don't *like* lemonade?????????????
This is diabolical - evil - reprehensible - unconconsionable -
sick/twisted - dangerous - damn funny.
http://www.fiftythree.org/etherkiller/
For those who eschew browsers - it's a series of pictures of all the usual
computer and networking connectors - - - spliced onto AC Mains cords. ;{}
zzzzzzzzzap - what's that *smell*????
Cheersz
Nick Tesla
I just got 17 messages in a chunk, from the one I've forwarded below
onward - I wonder who along the way has been storing traffic in it's
cheeks... ?
Note the date/time stamping -
---------- Forwarded message ----------
Date: Wed, 21 May 2003 16:12:41 +0100
From: "Hills, Paul" <Paul.HILLS(a)landisgyr.com>
Reply-To: cctalk(a)classiccmp.org
To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org>
Subject: RE: Practical Electronics CHAMP/Tangerine Microtan 65
>I still have my ZX80 which preceded the Microtan. I
Cheerz
John
Hi;
The lab where it is at is closed and the current super is on vacation. I will
ask if he wants to help when he returns in mid June.
Paxton
Astoria, OR
if one should show up, I'd like to find a Memorex 650/651
drive to try reading some discs someone gave me.
it is hard sectored, with the sector holes on the outside
edge of the disc instead of the inside.
so, im thinning the herd some more, and have had to make a tough
decision... to keep the lispm or not... and ive decided i need to find it
a new home. so, i have for sale, a Symbolics 3650 Lisp Machine. While
some of the gear has been given away, the lispm is one i paid a good bit
of money for (i actually bought it surplus from Symbolics!)
and so this one is for sale. It'll go on ebay soon if there's no interest
here. The machine is fully operational , has a 750 MB disk, 4 megawords
(36 bit word size) of memory, and has Genera 8.3 (the latest version as of
2001) installed. Some pictures of it can be found at the url listed on the
bottom.. just scroll about 2/3 of the way down. I'm asking $800.00.
It's in Pittsburgh, PA, btw.
happy hacking,
Isildur
http://www.vaxpower.org/~isildur/computers.html
Hello all!
I'm restoring a PDP-7 machine to functional condition, pictures at
http://tore.nortia.no. Anyone here ever worked at DEC while this was
happening? Anyone know anything about the PDP-7? I saw a post regarding a
still-functional PDP-7 running a Van der Graaff posted July 2002, but the
poster doesn't reply to my mail. Know where it was?
-Tore
"Pluribus unum, infinitiv thesaurus. Cardio anima stinki latina!"
