| 摘要 |
PURPOSE:To ensure the display for the residue of the battery life and the time through the common use of the display unit along with the switching by controlling the gate via the battery residue switch. CONSTITUTION:When battery residue change-over switch 7 is opened, the output of inverter 8 features a high level to open AND gate 9. And the time is displayed on display unit 12 via decoder 3b. On the other hand, when switch 7 is closed, AND gate 10 opens to display the battery residue on display 12 via voltage decoder 6. Thus the residue of the battery life can be displayed by switching and with the common use of the display unit in a simple structure. |
