SEM of a DRAM computer memory chip

SEM of a DRAM computer memory chip

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Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph (SEM) of part of a 256-kilobyte Dynamic Random Access Memory (DRAM) integrated circuit or silicon chip. DRAMs do not store information on a permanent basis; instead their memory cells are refreshed every 2 milliseconds. A mainframe computer might contain 400-1000 DRAMs. Magnification: x4, 000 at 8x10, x500 at 35mm size.

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Keywords: chip, dram chip, dynamic random access memory, electronic, electronics, high-tech, integrated circuit, memory chip, microchip, ram chip, random access memory chip, technology

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