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Magnetic cores originated with two inventors: A. Wang and F. W. Viehe, who independently began experimenting with cores for computer memories in the 1940s. Later development work was done by others, including the Massachusetts Institute of Technology, RCA and IBM. In the 1950s and 1960s, cores were progressively miniaturized to produce high-speed memories. In this 1955 view, a group of IBM cores is compared in size to a pencil and a printed circuit. (VV2116)
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