I got my calculator. It comes with a 200-page manual. https://mastodon.sdf.org/media/q6q-6gHNIwjriPYGC1M
@dbucklin I had a 71 (rather rare) and several 41s (everyone in engineering school had those), and also a 28.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko