DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
Light micrograph of a wafer, showing the junction (green cross) between four 16K 4116 memory integ- rated circuits (silicon chips). These are typical memory chips used in printed circuit boards for computers and other electronic equipment. Magnif- ication: X 20 at 35mm size, X 75 at 5x4-inch size.
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