universal serial bus (USB)
Definition
Non-proprietary standard for a 12-megabit bus that replaces parallel ports, serial ports, and ports for keyboard, modem, mouse, game controls, speakers, etc. It uses a only 15-millimeter wide connector, can connect up to 63 devices in a daisy-chain or star topology, and offers plug-and-play and hot attach/detach capabilities. USB standard was proposed in 1993 jointly by Compaq, Digital, IBM, Microsoft, NEC, and Northern Telecom. See also Firewire.
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