读取字库文件，将点阵显示到16x16的LED模块上的程序

扫描4X4键盘,当有键按下被识别以后蜂鸣器鸣响一声，并 将键值在数码管和8个LED上显示,同时将键值通过串口发 送给PC机-key

一款用VB模仿LED中英文滚动字幕的显示屏，完美支持中文和英文显示，自带字库。可以设定刷新频率，滚动速度，设置字体颜色，逼真的LED界面，看上去不错哦！-Using VB to mimic the rolling English subtitles LED display, the perfect support Chinese and English display, comes with character. You can set the refresh rate, scrolling s