SD卡详细中文资料。非常适合初学者编写SD卡驱动-Chinese data SD card details. Very suitable for beginners to prepare SD card driver

SD卡的SPI方式驱动，SPI方式简单速度也可以，很多处理器都有SPI功能，没有也可模拟。-SD card SPI mode driver, SPI is simple speed can, many processors have the SPI function, does not and can simulate.

SD卡的SPI驱动需要研究的内容，比较适合初学单片机的同学-SDcard