Ethernet is in widespread use to network computers and devices. The first Ethernet was designed by Bob Metcalfe in Xerox Corporation's Palo Alto laboratory. It was able to operate at 3 Mbps over a shared coaxial cable, using a protocol known as Carrier Sense Multiple Access Collision Detect (CSMA/CD). The market for Ethernet equipment amounts to in excess of $16 billion per year.
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