[問題] 為什麼要加buffer?
不好意思，這個問題可能很笨
但我一直想不明白 = =
常常聽到說加 buffer 提高驅動力
以數位ic來說，一般就是加 inverter
可是
每個邏輯閘，不都是也都要接 vdd 和 gnd 嗎? (NOT 也是..)
為什麼訊號變弱，加 inverter 就可以拉高訊號
其餘的邏輯閘，就是訊號衰減?
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