| 摘要 |
A bearing display device having a terrestrial magnetism sensor measuring terrestrial magnetism, a display section, and a control section for calculating a geographical bearing based on the value measured by the terrestrial magnetism sensor and causing information on the calculated bearing to be displayed on the display section. The control section monitors variation in behavior of an electronic component mounted on the bearing display device and causes the information on the bearing displayed on the display section to be updated depending on the behavior variation.
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