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Russian phone dialler using interesting magnetic memory tech

mikeselectricstuff · Youtube · 47 HN points · 0 HN comments
HN Theater has aggregated all Hacker News stories and comments that mention mikeselectricstuff's video "Russian phone dialler using interesting magnetic memory tech".
Youtube Summary
Russian "Trill-2" phone dialler using the same magnetic memory tech as used on the Apollo flight computer.
Schematic here : http://electricstuff.co.uk/trill2.pdf

mikeselectricstuff merchandise : https://mikeselectricstuff.creator-spring.com/
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Jan 02, 2022 · 45 points, 4 comments · submitted by userbinator
Animats
That's a mini version of a piece of telephone central office equipment called a Dimond ring translator.[1] From 1945. ROM, the early days.

[1] http://etler.com/docs/Crossbar/articles/30-AMATranslator.pdf

timonoko
These weird mega-jumbo magnetic rings were standard issue in Russian military equipment. That is how you stored parameters in the tube-based missile controller I was fiddling with while in Finnish Army in 1970s.
userbinator
Spoiler alert: https://en.wikipedia.org/wiki/Core_rope_memory
ta988
Unfortunately it doesn't explain how it works.
ggeorgovassilis
It doesn't :( I'm tempted to edit the article and add an explanation but it'll be slashed as "original research". OP's video explains the concept well however.
Dec 29, 2021 · 2 points, 0 comments · submitted by forinti
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