| 摘要 |
PROBLEM TO BE SOLVED: To flexibly realize user's desired function in a display device by a minimum addition by allowing a bus connecting to an arithmetic means to be fetched from a mounting portion. SOLUTION: A control device 1 is an independent distributed type control device, and has a CPU unit 11, #1 and #2 radio communication units 12, a wire communication unit 13, #1 and #2 I/O units 14, and these units are connected with an I/O bus 5 through cables 6. In this case, the radio communication units 12 having a control device, a display device 2 for performing two-way communication through radio communication for the radio communication units 12, and a display device 3 for performing two-way communication through wire communication for the wire communication units 13 are provided. The bus 5 connected with an arithmetic means can be fetched from a mounting portion.
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