sd card sd1.1 與sd2.0 part1與part2資料

资源还不错，有4个文件: SD Specifications Part 1: Physical Layer Simplified Specification, Version 1.10 SD Specifications Part 1: Physical Layer Simplified Specification, Version 2.00 SD Specifications Part 2: File System Specification, Version 1.01 SD Specifications Part 2: File System Specification, Version