In the 1981 BBC TV series of the 'Hitchhiker's Guide to the Galaxy', the animated sequences simulated the look of a computer display but weren't actually computer generated. They were drawn on sheets of acetate as traditional 2D animators had done for decades.
The animation is one of the most memorable aspects of the TV series and, despite being almost 40 years old, still holds up really well:
The animation is one of the most memorable aspects of the TV series and, despite being almost 40 years old, still holds up really well:
https://youtu.be/iuumnjJWFO4?t=127