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4-layer PCB design: 1️⃣ Top layer 2️⃣ Bottom layer 3️⃣ GND layer 4️⃣ 5V layer
Mạch 4 lớp. Hai lớp trong là plane tham chiếu cho 2 lớp tín hiệu [...]
Mạch 8 lớp: Lớp 2, 5, 7 là lớp GND
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