Vacuum tube logic thing

From: William Donzelli <aw288_at_osfn.org>
Date: Mon Feb 2 21:48:01 2004

I'll give this list a shot a something meat I have had for a while -
maybe I can get a nice trade.

I have a big logic trainer that I would like to move on. It is pretty
neat and unique for three reasons:

1) It is based on vacuum tubes. Inside are a number of 12AX7oids that do
the work. I think this dates to the very late 1950s.

2) The logic is really odd. It is binary, but the logic levels are not
voltage levels, but phases. Hell of a way to run a railroad, in my book.

3) Its Japanese. Yes, Japanese. Apparently part of an early minicomputer
project that came out of Japan called Parametron.

So what I have is a really odd duck - a Parametron LT-2E, with power
supply, spares kit (with spare tubes!), and the reamins of a manual. It
is a pretty big desktop unit, but I think I can ship it FedEx ground in a
couple of boxes (from 10512).

As of now it is untested, but tomorrow I think I might look into powering
it up. There is some paint flakage and a little corrosion in the aluminum
body, but nothing to scream about.

So I am fishing for a trade. A good trade, as I know this thing is worth
some real money. What do I like? Big is good, old is good, IBM or Univac is
good, but I am open to ideas. I can trade up or down with cash, if we can
not quite equal things out.

Try me.

I'll try to get some pictures shot tomorrow.

William Donzelli
aw288_at_osfn.org
Received on Mon Feb 02 2004 - 21:48:01 GMT

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