led matrix,16x16屏，实现上下左右，滚动，代码有说明，配有字模提取软件，方便大家学习使用。可在这个基础上扩展更大的屏幕。-led matrix, 16x16 screen, achieving up and down, rolling, the code is described, with font extraction software for them to learn to use. Can be extended on this basis a larger screen