| 摘要 |
There is provided a display apparatus utilizing a display unit having memory properties, which notifies a user of the facts that the batteries have become low, that the batteries have been removed, that a normal voltage has been recovered as a result of reloading of batteries and the like. A display unit has memory properties and displays images under control of a display control unit. A power supply unit may be constituted by, for example, batteries and supplies power to each part of the apparatus. The power supply unit transmits a voltage drop signal to a central processing unit when the voltage of the batteries falls below a predetermined voltage. Upon receipt of the voltage drop signal, the central processing unit causes a part or the whole of a display area of the display unit to display the fact that the batteries are dead. It performs control to prevent a display from being changed even if an operating unit is operated or display information is received thereafter.
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