The DICT Development Group

Search for:
Search type:

Database copyright information
Server information

2 definitions found
 for bus topology
From WordNet (r) 3.0 (2006) :

  bus topology
      n 1: the topology of a network whose components are connected by
           a busbar [syn: bus topology, bus]

From The Free On-line Dictionary of Computing (30 December 2018) :

  bus topology
  computer bus
      A set of electrical conductors
     (wires, PCB tracks or connections in an integrated circuit)
     connecting various "stations", which can be functional units
     in a computer or nodes in a network.  A bus is a
     broadcast channel, meaning that each station receives every
     other station's transmissions and all stations have equal
     access to the bus.
     Various schemes have been invented to solve the problem of
     collisions: multiple stations trying to transmit
     at once, e.g. CSMA/CD, bus master.
     The term is almost certainly derived from the electrical
     engineering term "bus bar" - a substantial, rigid power supply
     conductor to which several connections are made.  This was
     once written "'bus bar" as it was a contraction of "omnibus
     bar" - a connection bar "for all", by analogy with the
     passenger omnibus - a conveyance "for all".
     More on derivation (/pub/misc/omnibus.html).
     There are busses both within the CPU and connecting it to
     external memory and peripheral devices.  The data bus,
     address bus and control signals, despite their names, really
     constitute a single bus since each is useless without the
     The width of the data bus is usually specified in bits and
     is the number of parallel connectors.  This and the clock
     rate determine the bus's data rate (the number of bytes per
     second which it can carry).  This is one of the factors
     limiting a computer's performance.  Most current
     microprocessors have 32-bit busses both internally and
     externally.  100 or 133 megahertz bus clock rates are
     common.  The bus clock is typically slower than the processor
     Some processors have internal busses which are wider than
     their external busses (usually twice the width) since the
     width of the internal bus affects the speed of all operations
     and has less effect on the overall system cost than the width
     of the external bus.
     Various bus designs have been used in the PC, including
     ISA, EISA, Micro Channel, VL-bus and PCI.  Other
     peripheral busses are NuBus, TURBOchannel, VMEbus, MULTIBUS and
     STD bus.
     See also bus network.
     http://open-taxi.com/mynews/~adrian/10)">Ukranian (http://open-taxi.com/mynews/~adrian/10).

Contact=webmaster@dict.org Specification=RFC 2229