In the computer lab of the future, educators no longer will lose valuable instructional time waiting for students' machines to boot: Within a few years, a new memory chip from IBM Corp. and Infineon Technologies AG reportedly will enable computers to load instantly, at the flick of a switch.

Called Magnetic Random Access Memory (MRAM), this breakthrough technology uses magnetic, rather than electronic, charges to store bits of data. The result is a memory chip that consumes less battery power, stores more data, and retrieves information faster than the high-speed Static RAM and low-cost, high-capacity...

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