| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a battery type mouse from unnecessarily consuming its battery extremely easily. SOLUTION: When the mouse is at a stop, the I/O port of a microcomputer is turned high-impedance state. The microcomputer enters a power-saving mode once the I/O port is turned in the high-impedance state. The external interruption input terminal and I/O port of the microcomputer go up to a Hi level a specific time after the high-impedance state is entered. When the external interruption input terminal goes up to the Hi level, the power-saving mode is reset. Once the power-saving mode is reset, the I/O port outputs Lo. Namely, a normal mode is entered.</p> |
