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Comment by schlauerfox | Hacker News Reader

How can they only have one low resolution picture and only pictures of the outside?? What display tech does it use? I can't imagine there are Roman Numeral Nixie tubes. https://www.kuenzigbooks.com/pages/books/28672/claude-e-shan... I see Clear Lower, Clear KBD, Clear Upper. 7 'digits' display, but wow if anything needed a manual...

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The document is available on IEEExplore: https://ieeexplore.ieee.org/document/5311583

I've reproduced here: https://pdfupload.io/docs/13f78f9d

Amazing, thank you for the link! There's an entire 'collected papers' on the IEEE website. I'm going to miss my college library accounts now i'm graduated!

After staring at the linked PDF for a while, I think the display was a collection of lightbulbs (presumably behind a mask plate), probably arranged something like this:

     Upper dial   V XV
     (Quotient)    III
  
     Lower dial LLLVV
  (Accumulator) XXX X
                   IIII

Yeah, it's a relay counter like a score motor in a pinball machine, but each rotor is different since the I is mod 5, the V is mod2 and the LX is mod 80, directly connected to the lights. The principles discussion is well done. Wow I love old tech documentation! I still don't have a good visualization of what the display 'dial' looks like

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