procedures role : Sage Tech test. Development board (MCP300) hd7279 keyboard chip can show normal work*//* functions of the program : Clicking on the 1st bond shows 0, 1, 2, 3, press the button on the 2nd show c, d, e, f, press the button on the 3rd show 4, 5, 6, 7*//* Press the button shows on the 4th 8,9, a, b, press the button to light up the 0, 4 LED lights* /

hd7279键盘显示芯片c51代码.txt

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