483
A 1977 Time Capsule, Voyager 1 runs on 69 KB of memory and an 8-track tape recorder
(techfixated.com)
This is a most excellent place for technology news and articles.
I don't really understand what I'm looking at, but this looks like a good place to start:
https://github.com/SRF0x41/Voyager1
There are links to actual code at JPL, but I don't know if everything is published online.