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countries 相关的电子技术资料，包括技术文档、应用笔记、电路设计、代码示例等，共 22 篇文章，持续更新中。
Microsoft Press books are available through booksellers and distributors worldwide. For further info
Microsoft Press books are available through booksellers and distributors worldwide. For further information
about international editions, contact your local Microsoft Corporation office or contact Mi
LED的电源管理
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A light-emitting diode (LED) is a semiconductor device that emits narrow-spectrum incoherent light when forward-biased.The color of the emitted light depends on the chemical composition of the