There are actually three separate computer systems in the probe: two with 4K and one with 8K memory. Each computer system is a fully redundant pair, so in total

There are actually three separate computer systems in the probe: two with 4K and one with 8K memory. Each computer system is a fully redundant pair, so in total there's actually 32K of memory in the probe. During certain parts of the mission they ran some systems in a non-redundant mode so they could double their processing and get more science done. What they did with the Voyager 1 & 2 probes was amazing. Edit: actually I am mistaken. Each probe had around 69KB of memory. I confused word capacity with kilobytes when looking it up. https://www.nasa.gov/mission_pages/voyager/multimedia/vgrmemory.html https://www.nasa.gov/mission_pages/voyager/multimedia/vgrmem...