picture_viewer图片浏览器,可在LCD上显示存储在SD卡根目录:/image目录下的JPEG图片，图片格式只允许是JPEG，图片大小可以任意，如果超过800*480图片解码可能会比较慢。-picture_viewer

实现在LTM上显示800*480大小的图片 并且可以触摸实现浏览前一张或者后一张图片-Picture display size of 800 x 480 and can touch a browse before or after the picture on the LTM

包含测频计、按键分频器、七段数码管显示分频系数和频率大小，已在开发板上运行，精度较高，并包含modelsim仿真do文件和图片，原理图等。-Contains the measured frequency meter, the key divider, seven segment LED display division factor and frequency of size, has been running on the development board, high precision,