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A researcher from the Department of Physics and Astronomy at the University of Glasgow provides this website on Magnetic RAM (MRAM) -- a non-volatile memory storage system similar to Flash memory except that it uses less power and switches faster. Predicting that "2005 could see mass production of MRAM parts" to be used in powering instant-on computers and computers that are in stand-by power-savings mode (as is currently done with PDAs and laptops), the author reviews some of the physical challenges yet to be overcome. The website provides some basic information on magnetic memory and binary notation, as well as sections on: the Principle of the Magnetic Memory, The Rectangular Hysterisis Loop, A Magnetic Memory Element, Arrangement of Magnetic Core Memories, Relation between the Decimal and Binary Codes, How Numbers Are Stored in a Memory, How a Binary-Coded Decimal Digit is 'written in,' How a Digit is 'read out,' and a Complete Wiring Diagram of a Matrix Plane.
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