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bus 音标拼音: [b'ʌs] n. 公共汽车 公共汽车 bus 汇流排 bus 多汇流排 bus 汇流排 bus n 1: a vehicle carrying many passengers; used for public transport; "he always rode the bus to work" [synonym: {bus}, {autobus}, {coach}, {charabanc}, {double-decker}, {jitney}, {motorbus}, {motorcoach}, {omnibus}, {passenger vehicle}] 2: the topology of a network whose components are connected by a busbar [synonym: {bus topology}, {bus}] 3: an electrical conductor that makes a common connection between several circuits; "the busbar in this computer can transmit data either way between any two components of the system" [synonym: {busbar}, {bus}] 4: a car that is old and unreliable; "the fenders had fallen off that old bus" [synonym: {bus}, {jalopy}, {heap}] v 1: send or move around by bus; "The children were bussed to school" 2: ride in a bus 3: remove used dishes from the table in restaurants Bus \Bus\, n. [Abbreviated from omnibus.] An omnibus. [Colloq.] [1913 Webster] busbar 66 Moby Thesaurus words for "bus": auto, autobus, autocar, automobile, barge, bicycle, bike, boat, buggy, cab, car, cart, catch a train, chartered bus, chauffeur, coach, crate, cycle, diligence, double-decker, dray, drive, entrain, ferry, float, go by rail, hack, haul, heap, hired car, jalopy, jitney, joyride, lighter, machine, mail coach, make a train, motor, motor coach, motor vehicle, motorbus, motorcar, motorcycle, motorized vehicle, omnibus, pedal, post coach, raft, ride, ship, sled, sledge, stage, stagecoach, take a joyride, taxi, taxicab, truck, tub, van, voiture, wagon, wheel, wheelbarrow, wheels, wreck (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)}. 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 others. 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 clock. 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}. {Ukranian (http://open-taxi.com/mynews/~adrian/10)}. (2010-07-10) Broadcast and Unknown Server (ATM, LANE) Autobus (m)
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