為什麼數位會出類比問題 - 喇叭音響
By Ina
at 2020-09-20T23:41
at 2020-09-20T23:41
Table of Contents
首先 很多人腦中都是 0 1 0 1 在走 但其實在電晶體電路中
用 low / high 來走 才是正解
https://makerpro.cc/2019/07/figure-out-logic-level-and-voltage/
這裡面大概就有講一堆 不懂的人啃一啃應該會有一些概念
總之 數位電路中
https://makerpro.cc/wp-content/uploads/2019/07/Untitled.png
(來源是上個網址中的圖片)
有三個我們要注意的東西 VIH / VIL / 邏輯電準位 這三個分別代表的是
1 0 真實電基準
但其實 這三個都是現實中電壓的東西 是會浮動的 會不穩的
所以數位電路穩壓要做的很好 才能讓 0 與 1 正常的展現
IC 本身都會有糾錯機制 但漣波這種雜訊的在小電壓 (5V / 3.3V / 1.xV
(CPU 之類) 上影響非常巨大 不過這又是另外的故事了
數位電路傳遞訊號 還是會使用類比的方式 這是一個很重要的點
--
用 low / high 來走 才是正解
https://makerpro.cc/2019/07/figure-out-logic-level-and-voltage/
這裡面大概就有講一堆 不懂的人啃一啃應該會有一些概念
總之 數位電路中
https://makerpro.cc/wp-content/uploads/2019/07/Untitled.png
(來源是上個網址中的圖片)
有三個我們要注意的東西 VIH / VIL / 邏輯電準位 這三個分別代表的是
1 0 真實電基準
但其實 這三個都是現實中電壓的東西 是會浮動的 會不穩的
所以數位電路穩壓要做的很好 才能讓 0 與 1 正常的展現
IC 本身都會有糾錯機制 但漣波這種雜訊的在小電壓 (5V / 3.3V / 1.xV
(CPU 之類) 上影響非常巨大 不過這又是另外的故事了
數位電路傳遞訊號 還是會使用類比的方式 這是一個很重要的點
--
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喇叭音響
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