Any device capable of storing data is known as a Storage Device. The term usually refers to mass storage devices, such as disks, tapes, etc. Technically, storage devices can be defined as any piece of hardware whose main function is to store data and information.
Secure Digital (SD) is a non-volatile memory card format developed by the SD Card Association (SDA) for use in portable devices. The SD technology is used by more than 400 brands across dozens of product categories and more than 8,000 models.
Micro SD cards are one of the smallest removable flash memory card formats designed specifically for small devices, mainly used as phone memory. Smaller than miniSD cards, and also based on the SD card format.
NAND flash memory is a type of non-volatile storage technology that does not require power to retain data.Flash memory is a non-volatile computer storage chip that can be electrically erased and reprogrammed.