On 2022-09-23 5:26 p.m., Jon Elson via cctalk wrote:
As for the defense maps, they really DID exist. Our university had some
bits of SAGE, and one of the things was the big map projector. The way
the thing worked was a small CRT was projected onto movie film, the film
ran through a developer, and then was projected onto a large screen. I
don't know what the delay for film processing was, but it must have been
30 seconds or so.
Jon
That rememinded me of another project, The Memex from 1945.
A hyper-text terminal before the internet using micro film and
other analog media of the day. Output was dry film process.
https://trevor.smith.name/project/memex/
https://retrocomputingforum.com/t/trevor-flowers-rebuilds-memex-and-alto/2740
Ben.
