| 摘要 |
PROBLEM TO BE SOLVED: To provide a data communication system capable of reducing the labor at the time of changing the design and reducing the cost. SOLUTION: An audio processing part 110, a navigation processing part 120, an operation processing part 130, a frame signal generation part 140, a driver circuit 150, and an OR processing circuit 160 are stored in a casing 100. Data frames outputted from each of the processing parts 110, 120, 130 are sent from the driver circuit 150 to a bus 400 through the circuit 160. In the case of executing data communication between each of processing parts in the casing 100, data outputted from a transmission buffer 152 in the circuit 150 are folded to the other processing part through a receiving buffer 154.
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