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> I for one usually think of a bus as several different signals that are
> always used together such as a microprocessor
> bus with have address, data and control signals.
> 
> I would use vector for what you are calling a bus if it is only one signal
> name and a width.
> 

I would use vector for the adress and data bus but not for the control signals although all three are needed in the bus. If designing with microcontrollers it is very common with a serial bus instead of a parallell bus, for example synchronous ser ial communication (SPI).

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