研究NFC的好资料。最近发现NFC论坛要成为会员才能下载，于是分享出来，供大家研究，文件太多，分为了几个包单独上传，大家根据需要下载。-Good research information on the NFC. Recently discovered NFC Forum is expected to become a member to download, then share it for everyone to study, too many files, is divided into several separate packages upload, it downloaded as needed.