| 摘要 |
<p>PURPOSE:To easily recognize that an energy waste preventing circuit is operated, by forcibly controlling the operation of a driving circuit of a numerical display body, by an output from a detecting circuit for detecting the operation of the waste preventing circuit. CONSTITUTION:When a waste preventing circuit 10 is operated, a controlling circuit 12 is operated through an operation detecting circuit 11, and an output signal is generated. As a result, the controlling circuit 12 controls an operation of a driving circuit 8 of a numerical display body 7. This control of the driving circuit 8 by the controlling circuit 12 becomes control for executing an alphabetic display whatever display the numerical display displayed before that time may be. For instance, a state displaying 400 ASA sensitivity value is forcibly switched to alphabetic display of ''OFF''. Accordingly, a user can recognize easily that the energy waste preventing circuit is operated, by seeing the alphabetic character of ''OFF''.</p> |
