Secure Digital card is non-volatile storage card that is launched by SD card Association. This secure digital card is mainly used in portable devices. SD card is mainly used in digital camera. SD card is very compact and slim in nature but store a huge amount of data. The capacity of SD card varies from 8Mb, 32Mb, 64Mb, 1GB, and 64GB. There are several types of SD card like miniSD card, microSD card, SDHC and SDXC.
