ANTONIO ROMERO / SCIENCE PHOTO LIBRARY ANTONIO ROMERO / SCIENCE PHOTO LIBRARY
Microprocessor components. Light micrograph of an Intel Pentium microprocessor's pipelined floating-point unit (FPU). An FPU (or math coprocessor) is the part of a computer system specially designed to carry out operations on floating point numbers. 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: x22, when printed 10 centimetres wide.
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