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From Paul McJones on LinkedIn:
Most people are familiar with Niklaus Wirth's sequence of languages [EULER, PL360, Algol W,] Pascal, [Modula,] Modula-2, Oberon. But a parallel sequence, designed at #Xerox #PARC and #DEC System Research Center, is not so well known: MPL, Mesa, Cedar, Modula-2+, Modula-3. I … decided to capture as much of the history as possible of these "shadow" languages:
MPL/Mesa/Cedar: https://lnkd.in/gnUa6WU6
Modula-2+: https://lnkd.in/gnuqCrxV
Modula-3: https://lnkd.in/g5iwK5jD -
Check out the guts of a #Soyuz mechanical navigation computer thought to be from the The Apollo-Soyuz Test Project. Apparently this style of nav computer was still used until ~2001.
It's an amazing piece of machinery which you can see for yourself on the #CuriousMarc channel, and read about in detail on Ken Shirriff's blog (@kenshirriff).
https://www.righto.com/2023/01/inside-globus-ink-mechanical-navigation.html
https://www.youtube.com/watch?v=dmHaCQ8Ul6E