In order to reduce the 8-bit display signal interface cable, digital display in the experimental box scan display mode of operation. I.e. the seven segment decoder 8-bit digital input (a, b, c, d, e, f, g) is connected in parallel with each digital tube is selected by a 3-bit SEL [2 .. 0] to be selected.

shaomiaoqudongxianshidianlu.txt

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