Magnetic Core Memory       


Physics Accomplishment | 1947 - 1955

IBM researchers: Jay Forrester, Frederick Viehe

Where the work was done: IBM TBD

What we accomplished: IBM engineers developed magnetic core storage units, a dramatic improvement over the previous storage technology:  cathode ray tubes.   Over time IBM greatly improved the manufacture of these tiny, "doughnut" shaped, iron oxide cores by successfully adapting pill-making machines for production, making the cores reliable and cost effective enough to serve as the basic technology behind every computer's main memory until the early 1970s.

Related links: Wikipedia Article, Computer History Museum Site on Core Memory

Image credit: By Konstantin Lanzet - received per EMailCamera: Canon EOS 400D, CC BY-SA 3.0

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