Jay Forrester patents magnetic-core memory

28th February 1956
Jay Forrester patents magnetic-core memory

In 1949 Jay Forrester devised a memory system that used rings of magnetic material to store data.

On 28th February 1956, Forrester was awarded patent number 2,736,880 for his coincident current magnetic core memory.

Forrester's random-access magnetic-core memory was faster and more reliable than pervious memory technologies. Magnetic-core memory remained the predominant form of computer memory storage until it was replaced by solid state RAM in the 1970s.

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  • Front cover of Forrester's 1956 patent
    Credit: Public domain.

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