Which of the following memories contains a thin film of magnetic material sand witched between two permanent bias magnets?
Core memories contains a thin film of magnetic material sand witched between two permanent bias magnets.
At the dawn of the computer age, magnetic core memory helped make data storage possible, and showed surprising staying power in a field where components are constantly being replaced by new and improved products. One such example is magnetic core memory. As one of the first stages of random access computer memory, it features tiny, circular ceramic structures (known as cores), all of which contain data and are linked by a network of wires. This storage system is commonly referred to as "core."
Core memory owes its existence to two American physicists who emigrated from China. Way-Dong Woo and An Wang are credited with developing the pulse transfer controlling device in 1949. The name is a reference to the means by which the electromagnetic influence of the cores regulates the transfer of electricity in electromechanical structures.