| 摘要 |
<p>The method recognizes fault of mode selection key as registration mode so that registration is executed at the cost of fault of mode selection key. The circuit includes a mode selection key (20-2) for selecting mode by selecting the path of mode scan signal of a CPU by operator's choice, a buffer (70) for transmitting mode scan signal to the CPU, and a key scan controller (80) for controlling the buffer by key scan address of the CPU.</p> |
