This is probably the best known dekatron computer
https://www.tnmoc.org/witch
Dekatrons both "compute" and "display" making them very versatile. Read
the chapter in the book by JB Dance that Jon referenced and you'll see
how they work.
On 27/01/2023 10:35, Benoit Tourret wrote:
When I was learning at the Control Data Institute in the early
eightees, we worked on a computer whitch only had discrete components.
no IC, only transistors, diodes, resistors and condensators. and a
tore memory. there was a backbone and hundreds of small cards where
pluged on, each card was a or, a nand or any logical door or a
flip-flop (register).
there was no keyboard nor screen, just 28 switches and 28 lights, one
raw for address, the other for the data. but it was 0 and 1, the
beginning of the ordinary logic
are the dekatrons working on 0 and 1 (1 + 1 = 10) or working on
differents level of tension ? such as in Concorde (the plane) where 1V
+ 1V = 2V
is this tube is only a "display" or does it have an active part of the
compute process ?
fot the MTX-90, if there is a gate, this is not just a display.
Does it is just a light activated with a small input or rather a
"transistor" ?
Le vendredi 27 janvier 2023 à 10:16:53 UTC+1, Jon a écrit :
Welcome Ben, good to have you here. It's a bit difficult to know
where to start with your question on dekatrons without writing
pages of stuff which might not be on point. A good start might be
to get hold of a copy of Electronic Counting Circuits by JB Dance
- that has a long chapter on dekatrons and related tubes, and
there are scans floating around (can't remember if we have one
here). Are there specific tubes you want to understand better?
Jon.
On Thursday, January 26, 2023 at 10:14:24 PM UTC Terry Bowman wrote:
On Jan 26, 2023, at 4:48 PM, Benoit Tourret
<benoit....@gmail.com> wrote:
I am looking for information about Dekatron device "as a
compute device", what are the main differences between all
the models,
and also about the thyraton mtx-90.
what was their first usage and so on...
I'd like to know more about the MTX-90 as well. Have you seen
these?:
https://www.ebay.com/itm/175204420312
Terry Bowman, KA4HJH
"The Mac Doctor"
https://www.astarcloseup.com
“...the book said something astonishing, a very big
thought. The stars, it said, were suns but very far away. The
Sun was a star but close up.”—Carl Sagan, "The Backbone Of
Night",/Cosmos/, 1980
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