olemus
liik ferriit-püsimälusid,
kasutati 1960il USA kosmosetehnikas
=
a form of read-only memory (ROM) for computers, first used in the 1960s by NASA

ülevaateid
https://en.wikipedia.org/wiki/Core_rope_memory

http://authors.library.caltech.edu/5456/1/hrst.mit.edu/hrs/apollo/public/visual3.htm