同学的毕业设计，兼容2G以上的SDHC SD卡，因为网上大多是SDHC卡SD卡，而现在一般都是4G以上的SD卡，所以弄了好久，可以显示字符，字符串还有图片，源代码和工程都包含在里面。-Students graduating from the design, compatible with 2G SDHC SD card, because the Internet is mostly SDHC card SD card, and are generally more than 4G SD card