The nature of the bio-assist suit worn by Lord Vader was probably advanced computer electric, but based on a bigger usury frame. Remember this was a large planetary system they were from. So the technical workability size increased.
Because these were computers and circuitry linked into Vader's neurological system, in order for the assisting suit to function, a reverse artificial intelligence back-flow occurred. Vader was able to talk to machines and had a way of communicating with them.
*I don't know if this was either fished by Project Rainbow Time Travel Project or occurred as writer's author's interest, but Lord Vader's electrical machine-like personality shows in composite in this movie scene.