| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic time recorder in which malfunction of a clock can be corrected automatically. SOLUTION: This time recorder has a formation in which a radio clock 1 is included and a CPU 5 switches forcibly the radio clock 1 into a time correction mode when a power supply code is connected to a plug socket or service interruption is finished. The time of the clock is corrected periodically in a normal operation, and the time of the clock is automatically corrected when an AC power supply is inputted, to thereby require no maintenance control work of the clock function of the time recorder. |
