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键盘控制芯片C语言控制程序,通过该程序可以实现7219芯片大部分LED控制功能的演示,以及键盘的读取,其中的I2C子函数也可以用于其他I2C器件-keyboard controller chip C language control procedures, the adoption of the 7219 procedures can be achieved most of LED chip control functions of the display, keyboard and read, I2C Functions can also be used for other I2C devices