“bus”的概念、定义、翻译、参考文献-科学参考

bus

Physics

(short for busbars) A set of conducting paths—wires or optical fibres—connecting several components of a computer system and allowing the components to send signals to each other. The components take it in turns to transmit.

Computer

A signal route to which several items of a computer system may be connected in parallel so that signals can be passed between them. A bus is also called a trunk in the US, and a highway in the UK. The signals on a bus may be only of a particular kind, as in an address bus or data bus, or they may be intermixed. To maximize throughput, the number of lines in the bus should equal the sum of the number of bits in a data word, the maximum address, and the number of control lines. As this is expensive to implement, a multiplexed bus may be used.
There is a widely used instrumentation bus standard, referred to as IEEE 488 or as GPIB, general-purpose interface bus. For microprocessors there are a number of standardized bus systems, one of the first to be widely used being the VME bus. The rapid development of the home computer has led to the introduction of several generations of bus systems of ever increasing speeds. Examples are ISA bus, PCI bus, accelerated graphics port, USB, FireWire, and PCI Express.

Electronics and Electrical Engineering

1. (busbar; busline) A conductor having low impedance or high current-carrying capacity to which two or more circuits can be separately connected or which can connect several like points in a system, as with an earth bus. Buses frequently feed power to various points. The name was first applied to metal bars of rectangular cross section supported on porcelain insulators.
2. A set of wires associated with a computer along which signals travel in parallel. Usually these signals are grouped by function, such as data signals on a data bus or address signals on an address bus.

单词	bus
释义	bus Physics (short for busbars) A set of conducting paths—wires or optical fibres—connecting several components of a computer system and allowing the components to send signals to each other. The components take it in turns to transmit. Computer A signal route to which several items of a computer system may be connected in parallel so that signals can be passed between them. A bus is also called a trunk in the US, and a highway in the UK. The signals on a bus may be only of a particular kind, as in an address bus or data bus, or they may be intermixed. To maximize throughput, the number of lines in the bus should equal the sum of the number of bits in a data word, the maximum address, and the number of control lines. As this is expensive to implement, a multiplexed bus may be used. There is a widely used instrumentation bus standard, referred to as IEEE 488 or as GPIB, general-purpose interface bus. For microprocessors there are a number of standardized bus systems, one of the first to be widely used being the VME bus. The rapid development of the home computer has led to the introduction of several generations of bus systems of ever increasing speeds. Examples are ISA bus, PCI bus, accelerated graphics port, USB, FireWire, and PCI Express. Electronics and Electrical Engineering 1. (busbar; busline) A conductor having low impedance or high current-carrying capacity to which two or more circuits can be separately connected or which can connect several like points in a system, as with an earth bus. Buses frequently feed power to various points. The name was first applied to metal bars of rectangular cross section supported on porcelain insulators. 2. A set of wires associated with a computer along which signals travel in parallel. Usually these signals are grouped by function, such as data signals on a data bus or address signals on an address bus.
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