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    Bi-Tran Six

    Yes, they were great for Octal math training too. The Navigation computers on the Navy's Submarines back then were all about Octal numbering. Then I got out 10 years later and Digital Equipment Corp. still had PDP-11's in the field that used Octal registers. I thought it was a bad dream.
  2. E

    Bi-Tran Six

    hahahahaha That's a HOOT!!! It didn't occur to me that the name of that gadget is right out of today's headlines! LOL
  3. E

    Bi-Tran Six

    Yes, the U.S. Navy Guided Missile School in Dam Neck Va, used them to train Electronics Techs computer logic operations and binary math. I used one in 1975. I got this picture from the PDF manual posted by one of your users (Thanks!)...this is the correct BI TRAN SIX:
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