这里用8x8的点阵来说明。8X8点阵共需要64个发光二极管组成，且每个发光二极管是放置在行线和列线的交叉点上，当对应的某一列置1电平，某一行置0电平，则相应的二极管就亮；要实现显示图形或字体，只需考虑其显示方式。(Here the 8X8 dot matrix is used to illustrate. 8X8 needs a total of 64 dot matrix of light emitting diodes, light emitting diodes and each inte