| 摘要 |
PURPOSE:To attain excellent operability by outputting a reset or a protection signal from a duplicate depression detection circuit when a reset switch or a protection switch is depressed singly and erasing a signal from the duplicate depression detection circuit when both switch are depressed simultaniously. CONSTITUTION:A reset switch SW1 for call operation stop, a switch SW2 to set memory protection and a switch duplicate depression detection circuit 3 are provided on a radio call receiver 4 provided with a message display section 5. When the reset SW1 or the protection SW2 is depresssed singly, a reset or protection signal is singly outputted from the duplicate depression detection circuit 3 to stop calling or to protect memory in the receiver 4 in response to the singal. Moreover, when the reset SW1 and the protection SW2 are depressed simultaneously, the duplicate depression detection circuit 3 detects it and sends a delete signal to the receiver 4. Then the receiver 4 stops the calling or protects the memory. When both switches SW1, SW2 are depressed simultaneously, the curcuit 3 detects it to send a erasing signal to the receiver 4. |
