| 摘要 |
PURPOSE:To adjust the time correctly and easily by starting a receiving means in the off condition forcedly, and adjusting the time easily to a frequency signal showing a receiving time. CONSTITUTION:When a starting signal S is inputted, a starting circuit 16 starts a receiving part 10 forcedly even if a switch 13 is off, it sets a frequency band to be received, and the frequency number for the band is detected by a wave detecting circuit 12. The receiving part is therefore started automatically at a displayed predetermined time, and it receives the predetermined frequency band which is preliminarily set, thereby a digital clock can adjust the time instantaneously by a frequency signal showing the predetermined time for the predetermined frequency band. |
