資料來源:https://www.sparkfun.com/products/12639
This is a 3.5mm TRRS SMD audio jack. TRRS connectors are the audio-style connectors that you see on some phones, MP3 players and development boards. TRRS stands for “tip, ring, ring, sleeve,” which reflects the fact that, unlike a standard stereo connector, this actually has three conductors and a ground. Some devices use the extra conductor for a microphone (like hands-free headsets) or to carry a video signal (like in some MP3/MP4 players).
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這是一個3.5mm TRRS SMD音頻插孔。 TRRS連接器的音頻型連接器,你在某些手機,MP3播放器和開發板看到的。 TRRS代表“尖端,環,環,套筒”,它反映的是,與一個標準的立體連接,這實際上有三根導線和地線的事實。一些設備使用額外導體用於麥克風(例如免提耳機)或攜帶一個視頻信號(如在一些MP3 / MP4播放)。
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