| 摘要 |
PURPOSE:To decide on whether a lock switch for time setting is in an operation state or stop state at a look by providing a display means near a colon display between the hour digit and minute digit of a display. CONSTITUTION:For displaying the state of the lock switch, a new dot 11 is provided between two dots 9 of the colon display. When the lock switch SW1 is short-circuited between terminals (a) and (c), a switch SW2 is also short-circuited between terminals (a) and (c) to turn on the dot 11, displaying the closure of the lock switch SW1. In this state, a switch SW3 for time setting is placed in a set state. On the other hand, when the switches SW1 and SW2 are short- circuited between terminals (a) and (b) respectively, no voltage is applied to the dot 11 and switch SW3 to obtain a locked state wherein time setting is possible and the dot 11 is turned off to perform normal time display. |
