The DICT Development Group

Search for:
Search type:

Database copyright information
Server information

1 definition found
 for Universal Serial Bus
From The Free On-line Dictionary of Computing (30 December 2018) :

  Universal Serial Bus
  USB 2.0
      (USB) An external peripheral interface
     standard for communication between a computer and external
     peripherals over an inexpensive cable using biserial
     USB is intended to replace existing serial ports, parallel
     ports, keyboard, and monitor connectors and be used with
     keyboards, mice, monitors, printers, and possibly some
     low-speed scanners and removable hard drives.  For faster
     devices existing IDE, SCSI, or emerging FC-AL or
     FireWire interfaces can be used.
     USB works at 12 Mbps with specific consideration for low cost
     peripherals.  It supports up to 127 devices and both
     isochronous and asynchronous data transfers.  Cables can
     be up to five metres long and it includes built-in power
     distribution for low power devices.  It supports daisy
     chaining through a tiered star multidrop topology.  A USB
     cable has a rectangular "Type A" plug at the computer end and
     a square "Type B" plug at the peripheral end.
     Before March 1996 Intel started to integrate the necessary
     logic into PC chip sets and encourage other manufacturers
     to do likewise.  It was widely available by 1997.  Later
     versions of Windows 95 included support for it.  It was
     standard on Macintosh computers in 1999.
     The USB 2.0 specification was released in 2000 to allow USB to
     compete with Firewire etc.  USB 2.0 is backward compatible
     with USB 1.1 but works at 480 Mbps.
     http://usb.org/)">usb.org (http://usb.org/).

Contact=webmaster@dict.org Specification=RFC 2229