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A backplane is similar in concept to a motherboard, except it contains no significant electronics (i.e. all of the electronics components are on boards that plug into connectors on the backplane), a motherboard usually contains significant amounts of electronics components and may or may not have several connectors connected similar to those on a backplane for optional boards that could add functionality to the machine desired by the user.

Some backplanes are not wired with all the connectors in parallel, but instead are wired "randomly" because every board plugged into the backplane has a specific purpose in the machine. These backplanes may not use any form of computer bus (e.g. address bus, data bus, control bus) or such buses may only be used to interconnect different backplanes within the machine or peripherals connected to the machine.

Backplanes have been constructed using hand soldering of the connector pins, wire wrapping of the connector pins (either by hand or automated machine), printed circuit board (either flexible or rigid), etc.

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8y ago

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