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,