Not so much for movies, which were typically shot on film and edited with a film splicer and splicing tape, but by the 80's TV was being somewhat computerised in some areas.
The Amega had an optional genlock box that made it a popular tool at the low end for overlays and character generation for example, and there was custom hardware from folk like Quantel, Snell & Wilcox and Probel for graphics overlays and the like (This all pre dates SDI digital video, so everything was component).
By the mid 90's hard drive capacity had come on sufficiently to make non linear a seriously practical proposition with custom hardware, again Probel (Video playout servers) and Quantel (Paintbox and the like), big money but it was a workflow revolution for TV, and EVS became a thing, standard def SDI was deployed).
On the movies side obviously the off line CGI and the like happened first but things really took off once digital imaging sensors got good enough for cinema resolutions (At least 2k pixels wide), then of course the digital cinema thing happened....
Regards, Dan.