yeah - I worked on ASR-35 teletypes, with a punch tape reader/writer and an acoustic couple modem ... I thought they came much later though like mid 70s/80s?
Which they? I did a deep dive on CTRL-U once when someone gave me a good breadcrumb to start with, and those control codes were way, way older than I suspected.
SO + Wikipedia seem to think it was the ASR-33, which was originally 1963. I had this notion that it was about 5 years before that. But it's clear the ASR-32 does not have a CTRL or a SHIFT key, and I'm not sure who they could have possibly stolen the idea from.
Reading a little more reminded me of another fact: the ASR33 was the first commercial use of the ASCII character format, which was developed in parallel.
