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CAN

Controller Area Network.

CAN is a low-end networking system. Originally designed for automotive applications, CAN is fast and robust in electrically noisy environments. It utilizes differential signals and tends to work best when used over twisted-pair wire. When making long cable runs between boards, a terminating resistor at each endpoint of the cable is required to maintain the integrity of the signals. When conditions are optimal, CAN signals can travel hundreds of feet.
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