When thinking about computer generated erotica, typically, current generation CGI is pictured. However, digital erotica has actually been around since the 70’s when it was used as a way to advertise video porn and phone sex lines.
This old digital format known as “Teletext” is a computer informational system that transmits data via television. The popular sex tech site SexWork101.com featured some samples of teletext porn (a few have been reposted here).
Graphically, it is pretty poor and certaintly outdated by today’s standards but for it’s time, 7-bit porn was actually kind of neat.