ANTONIO ROMERO / SCIENCE PHOTO LIBRARY ANTONIO ROMERO / SCIENCE PHOTO LIBRARY
Microprocessor clock driver. Light micrograph of an Intel Pentium microprocessor's clock driver, which regulates all the internal operations by the central processing unit (CPU). It oscillates at 100 million cycles per second. The chip was fabricated by photolithography, using several overlapping metalization layers and vertical contacts to interconnect them in a mono-crystal silicon wafer, which serves as the substrate. Magnification: x122, when printed 10 centimetres wide.
Model release not required. Property release not required.