Anode and cathode of LEDs. LEDの極性。
<a href="https://en.wikipedia.org/wiki/en:user:Adam850" class="extiw" title="w:en:user:Adam850">w:en:user:Adam850</a>
Uploaded to en.wikipedia.org by <a href="https://en.wikipedia.org/wiki/user:Adam850" class="extiw" title="en:user:Adam850">en:user:Adam850</a> on Dec 22, 2007, and uploaded to commons by <a href="//commons.wikimedia.org/wiki/User:Was_a_bee" title="User:Was a bee">Was a bee</a> on Jan 19, 2007.
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