JOHN WALSH / SCIENCE PHOTO LIBRARY JOHN WALSH / SCIENCE PHOTO LIBRARY
Light micrograph of part of a CODEC (COder- DECoder) integrated circuit, a type of silicon chip widely used in telecommunications systems. CODEC devices convert analog signals, for example, speech and music, to a digital form for transmission over a digital medium and then reconvert them back to analog form. Magnification: x33 for 35mm size, x66 for 6x7cm size.
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