| 摘要 |
PURPOSE:To enable a simple and rapid operation for adjusting a time, by changing a quick-forwarding frequency in stages according to the length of a time for operating a quick-forwarding switch. CONSTITUTION:When a quick-forwarding switch 15 is turned ON, a quick-forwarding frequency which is in accord with the length of a time wherein the switch is ON is deliverd from an adjustment frequency switching circuit 11. Quick-forwarding signals of 2Hz, 8Hz and 16Hz delivered from the quick-forwarding frequency switching circuit 11 are inputted in any one of a second counter 3, a minute counter 4, an hour counter 5, a day counter 6 and a month counter 7 selected by a counter selecting circuit 9, and thereby the quick-forwarding adjustment is performed. When the quick-forwarding switch is held ON within one second, a pushing adjustment is conducted once. |
