để tìm hiểu chuyên sâu về cái này thì bạn phải mất ít nhất nữa năm, còn làm chơi thì mất cỡ 1 tháng
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[Thảo luận] Tạo chữ chạy bằng cách quét cột diod phát quang 6 cột
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bỏ dụ tạo ngắt bằng hồng ngoại đó đi, bạn tháo 1 cái fan 8cm của máy tính, lấy con IC điều khiển 4 chân trong đó ra làm cảm biến từ.Nguyên văn bởi Nguyen Ngọc Xem bài viếtMình cũng biết vậy, nhưng chưa có gì trong tay thì phải đi nhặt lượm cho có chứ
Mấy cái kia mình hiểu rồi, còn CON2 là chưa biết là gì thôi. À mà nạp con AT9C451 phải nạp bằng mach riêng à? Còn con Diod thu kia để làm gì nhỉ?
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Cái tam giác đứt gạch là biểu tượng nối đất, tức là nối về nguồn nuôi, nguồn-đấtNguyên văn bởi Nguyen Ngọc Xem bài viếtCòn mấy cái này, các anh giúp em với!
Còn CON2 là biểu tượng của dây nối, thường là từ trong mạch ra ngoài, CON2 tức là 2 dây, CON3 là 3 dây...- Mạch nạp vdk 8051, AVR, PIC, EEPROM
- Linh kiện điện tử cho sinh viên
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Anh chỉ từ từ cho em với, em còn nonNguyên văn bởi chung1608 Xem bài viếtbỏ dụ tạo ngắt bằng hồng ngoại đó đi, bạn tháo 1 cái fan 8cm của máy tính, lấy con IC điều khiển 4 chân trong đó ra làm cảm biến từ.
. Ngắt này dùng để làm gì vậy anh? Bắt buộc phải đi qua cảm biến từ xa chứ không thể đưa vào một mạch duy nhất sao anh?
Vậy cái này nối đi đâu vậy anh? Hay để trống? (Cái mạch trong file đính kèm đó anh)Nguyên văn bởi nguyen24 Xem bài viếtCòn CON2 là biểu tượng của dây nối, thường là từ trong mạch ra ngoài, CON2 tức là 2 dây, CON3 là 3 dây...
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tất cả phần cứng của VDK kể cả cảm biến điểm ngắt đề nằm trên mạch, CON2 là ngỏ cấp nguồn, phần sau của luồng đó có bàn về vụ cấp nguồnNguyên văn bởi Nguyen Ngọc Xem bài viếtAnh chỉ từ từ cho em với, em còn non
. Ngắt này dùng để làm gì vậy anh? Bắt buộc phải đi qua cảm biến từ xa chứ không thể đưa vào một mạch duy nhất sao anh?
Vậy cái này nối đi đâu vậy anh? Hay để trống? (Cái mạch trong file đính kèm đó anh)
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Là con AH277A 647084 phải không anh? Nó có 4 chân thì dùng chân nào?
Với lại con cảm biến PHOTODIODE trong mạch thì dùng con nào vậy anh?Last edited by Nguyen Ngọc; 03-09-2012, 14:39.
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Anh có cái font bảng các chữ để dùng trong file code không anh? Em thấy có đoạn thế này mà không biết thay đổi như thế nào nữa:
TB:
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DB 81H,0FFH,0FFH,0FFH,0DFH,0FFH,0FFH,0FFH,0EFH,0FFH,0 FFH,0FFH,0F7H,0FFH,0FFH,0FFH,81H,0FFH,0FFH,0FFH,0F FH,0FFH,0FFH ;N
DB 0BFH,0FFH,0FFH,0FFH,0BFH,0FFH,0FFH,0FFH,81H,0FFH,0 FFH,0FFH,0BFH,0FFH,0FFH,0FFH,0BFH,0FFH,0FFH,0FFH,0 FFH,0FFH,0FFH,0FFH ;T
DB 83H,0FFH,0FFH,0FFH,0FDH,0FFH,0FFH,0FFH,0FDH,0FFH,0 FFH,0FFH,0FDH,0FFH,0FFH,0FFH,83H,0FFH,0FFH,0FFH,0F FH,0FFH,0FFH,0FFH ;U
DB 87H,0FFH,0FFH,0FFH,0FBH,0FFH,0FFH,0FFH,0FDH,0FFH,0 FFH,0FFH,0FBH,0FFH,0FFH,0FFH,87H,0FFH,0FFH,0FFH,0F FH,0FFH,0FFH,0FFH ;V
DB 81H,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;I
DB 81H,0FFH,0FFH,0FFH,0ADH,0FFH,0FFH,0FFH,0ADH,0FFH,0 FFH,0FFH,0ADH,0FFH,0FFH,0FFH,0BDH,0FFH,0FFH,0FFH,0 FFH,0FFH,0FFH,0FFH ;E
DB 0BFH,0FFH,0FFH,0FFH,0BFH,0FFH,0FFH,0FFH,81H,0FFH,0 FFH,0FFH,0BFH,0FFH,0FFH,0FFH,0BFH,0FFH,0FFH,0FFH,0 FFH,0FFH,0FFH,0FFH ;T
DB 81H,0FFH,0FFH,0FFH,0DFH,0FFH,0FFH,0FFH,0EFH,0FFH,0 FFH,0FFH,0F7H,0FFH,0FFH,0FFH,81H,0FFH,0FFH,0FFH,0F FH,0FFH,0FFH ;N
DB 0E1H,0FFH,0FFH,0FFH,0D7H,0FFH,0FFH,0FFH,0B7H,0FFH, 0FFH,0FFH,0D7H,0FFH,0FFH,0FFH,0E1H,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH ;A
DB 81H,0FFH,0FFH,0FFH,0DFH,0FFH,0FFH,0FFH,0E7H,0FFH,0 FFH,0FFH,0DFH,0FFH,0FFH,0FFH,81H,0FFH,0FFH,0FFH,0F FH,0FFH,0FFH,0FFH ;M
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FEH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH ;.
DB 81H,0FFH,0FFH,0FFH,0DFH,0FFH,0FFH,0FFH,0EFH,0FFH,0 FFH,0FFH,0F7H,0FFH,0FFH,0FFH,81H,0FFH,0FFH,0FFH,0F FH,0FFH,0FFH ;N
DB 81H,0FFH,0FFH,0FFH,0ADH,0FFH,0FFH,0FFH,0ADH,0FFH,0 FFH,0FFH,0ADH,0FFH,0FFH,0FFH,0BDH,0FFH,0FFH,0FFH,0 FFH,0FFH,0FFH,0FFH ;E
DB 0BFH,0FFH,0FFH,0FFH,0BFH,0FFH,0FFH,0FFH,81H,0FFH,0 FFH,0FFH,0BFH,0FFH,0FFH,0FFH,0BFH,0FFH,0FFH,0FFH,0 FFH,0FFH,0FFH,0FFH ;T
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;20
DB 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH, 0FFH,0FFH,0FFH,0FFH,0FFH,0FFH,0FFH ;21+6 201 ~2160
END
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Bài viết mới nhất
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bởi chinhnguyen9Công thức
Gain (dB) = 20 × log₁₀(A)
Thí dụ 1; 60dB
log₁₀(A)=60/20=3
⇒ A=V_out / V_in = 10³ = 1.000
Thí dụ 2; 100dB
log₁₀(A)=100/20=5
⇒ A=V_out / V_in = 105 = 100.000
Tí dụ 3; LM 358
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