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by frabert 1929 days ago
A bus is something computers and peripherals comunicate on. Think PCI, PCIexpress, USB
2 comments
mikepalmer1 1929 days ago
Well technically a bus is a group of wires shared amongst several devices. Each device has to wait its turn to talk/listen.

PCI, AGP, ISA, IDE are busses.

PCI express, USB, SATA are not busses but rather point-to-point protocols.

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fulafel 1929 days ago
The usage of the term has changed a bit. From WP:

"Early computer buses were parallel electrical wires with multiple hardware connections, but the term is now used for any physical arrangement that provides the same logical function as a parallel electrical bus. Modern computer buses can use both parallel and bit serial connections, and can be wired in either a multidrop (electrical parallel) or daisy chain topology, or connected by switched hubs, as in the case of USB. "

(The B in USB stands for Bus)

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janwillemb 1929 days ago
Is it like a bunch of wires?
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antoinealb 1929 days ago
It's both a bunch of wires as well as the definition for the protocol that uses said wires.
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