https://en.wikipedia.org/wiki/Magnetic_logic https://en.wikipedia.org/wiki/Magnetic_logic Iron is nuclear ash, and this tech is just about the most reliable im

https://en.wikipedia.org/wiki/Magnetic_logic https://en.wikipedia.org/wiki/Magnetic_logic Iron is nuclear ash, and this tech is just about the most reliable implementation of logic we have. It was used in the V2 rocket and US nuclear submarines. It's abandoned tech though and was never pushed beyond 1MHz. If however you have a decade to compute your reactions then that might not matter. Superconducting magnetic loops also store their flux indefinitely, and in space keeping it cool would be trivial.