ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Microchip wafer. Rows of silicon chips (square shapes) on a wafer (piece of silicon). The silicon is doped with impurities to produce areas that act as semiconductors, like transistors and diodes. These are linked on the surface of the wafer to form integrated circuits (microchips). The wafer is broken up into the individual chips, which can then be connected to a circuit board together with other electronic components to form part of a larger circuit. The circuitry of a microchip is most clearly seen in the chip at left.
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