Which of the following memories contains a thin film of magnetic material sandwitched between two permanent bias magnets?

Which of the following memories contains a thin film of magnetic material sandwitched between two permanent bias magnets? Correct Answer Core memory

Magnetic-core memory (core memory) was the predominant form of RAM memory in b/n 1955 and 1975. Core uses tiny magnetic rings through which wires are threaded to write and read information. Core memory often refers to just the central RAM of a computer that stores programs that are currently running and that data that they are working on.
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