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初代USB接口為何不支持雙向盲插?發明者稱因成本太高

分類:科技云 瀏覽數:20 2019-06-26 13:38 N軟網 編輯: 厚學

經過 20 多年的發展,USB 外設已經變得相當普及。但是對于許多用戶來說,Type-A 接口的一個頑疾就是難以找到正確的插入方向,網絡上也有著長期的吐槽。對于這個尷尬的問題,帶領英特爾 USB 開發設計團隊的 Ajay Bhatt 在近日接受 NPR 采訪時坦承 —— 生產雙向盲插接口方案的成本太高了。


(題圖 via TechSpot)

Ajay Bhatt 表示,設計一個可以盲插的 USB 連接器,會讓制造成本翻倍,主要是因為它需要額外的電路和電線。

當然,我們還是要肯定 USB 在統一外設接口上做出的歷史貢獻。因為在 USB 出現之前,幾乎每一種外設都有著各自不同的的專屬接口(鍵盤、鼠標、麥克風等)。

比起耗費大量的精力去學習識別各種不同的接口,USB 接口 50% 的插入準確率,已經算得上是一種質的飛躍了。

同時,我們要感謝科技巨頭說服整個行業推廣普及采用相同的通用型接口,這對降低 USB 的生產成本有著重要的意義。

不過隨著 USB Type-C 接口的普及(尤其在智能手機等移動設備上),大家終于可以閉眼盲插,不再去賭 50% 的“命中率”了。

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