| 摘要 |
PROBLEM TO BE SOLVED: To improve conveniences in use by informing of a failure in operation of operating parts. SOLUTION: When an operation part 11 is operated, a control part 12 determines whether processing corresponding to the operation can be executed or not, and if it cannot be executed, a sounding part 15 issues a response sound different from a response sound in the case of execution. Thereby, a user can ascertain that the operation of the operation part is accepted by equipment and judge that the processing corresponding to the operation cannot be executed because any of conditions are not satisfied. COPYRIGHT: (C)2003,JPO
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