| 摘要 |
Power savings are aimed by controlling display of a step count with no additional hardware. An acceleration sensor detects that a user is taking a step through an amplifier circuit, and outputs a walking signal corresponding to the step to a CPU. The CPU counts walking signals, and displays the accumulated number of steps on a display unit. When the CPU determines that the user is taking steps based on the walking signals, the CPU stops drive power from a battery to the display unit, and controls the display unit to stop displaying a step count.
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