bus definition architecture, networking
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 (http://foldoc.org/pub/misc/omnibus.html).
See computer bus
or bus network