[backhoe]

Ferrite cores? Indeed. :-) Our IBM 360/75J mainframes used ferrite core memory as well. (I'm getting old. Sigh.)

Double sigh- I have a Seeburg "Regency" jukebox in the shop- it uses a ferrite core memory to recall record locations ( the old ones used a mechanical "memory" ) and it was near state-of-the-art... in 1974.

[RadioAstronomer]

it uses a ferrite core memory to recall record locations

Way cool. I had no idea they used core.