| 摘要 |
PROBLEM TO BE SOLVED: To easily recognize the version of the software of a unit by providing a display means, a storage means where version information of the software of a self-machine is stored and an operation means displaying version information on the display means under a prescribed condition. SOLUTION: Version information of software is stored in a ROM incorporated in a micro computer being an operation means. Then, initialization of the micro computer 10, clearance of the RAM and the setting of an I/0 port are processed. Then, setting of a dip switch 40 and a rotary switch 41 is read. The information display (a code number and a character, for example) which shows that a device is started, the meaning of 'initial', for example, is displayed on a segment display unit 31. The micro computer 10 transmits version information of the software of the self-machine to a self-machine or the other interphone with a prescribed condition so as to display it on a display means.
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