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A bus wiring scheme in which, for example, device A is wired to device B, device B is wired to device C, etc. The last device is normally wired to a resistor or terminator. All devices may receive identical signals or, in contrast to a simple bus, each device in the chain may modify one or more signals before passing them on.
Characteristic of rs-485, of apple's localtalk, and of various industrial control networks; also often used to describe thinwire ethernet (10base2).