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A Local Interconnect Network (LIN) is an inexpensive serial network method for the connection of devices in automobiles. The LIN bus handles the connection of low-end multiplexed communication, while the Controller Area Network (CAN) bus is used for high-end operations that require quick and efficient connections, such as error handling. The LIN Consortium was founded in the 1990s by five leading automobile companies and Motorola, the leading technological innovation group of the time.
A Local Interconnect Network is a special serial network consisting up to 16 nodes, in which one node is the master node and all others are slave nodes. The master node initiates all messages while the slave nodes reply to the master node. The master node can also reply to its own messages, acting as a slave node. As there is only one master node initiating the message, a collision situation where two demands are given at once is not likely to arise. The nodes are microcontroller systems which are installed in certain systems for better control. LIN systems are usually paired up with low-cost sensors for making networks.
LIN was first implemented in November 2002. This version was called LIN version 1.3. An upgraded version of LIN was launched in September 2003 and was called LIN version 2.0. It had better compatibility and more diagnosis tools.