| 摘要 |
PROBLEM TO BE SOLVED: To correct a date included in operation result information prepared on a wrong date to a right date. SOLUTION: When the voltage of a spare power source 13 to be the power source of an electric timer 34 is not enough to normally drive the timer 34, a KARAOKE (to recorded accompaniment) terminal 10 obtains the right date from an information center 1 by communicating with the center 1. Then, based on the date, a date included in a log stored when the power source 13 is not enough for normally drive the timer 34 is corrected. |
