Samsung SGH D820

The correct title of this article is microSD. The initial letter is capitalized due to technical limitations.

microSD is an ultra-small, removable flash memory card format originally based on SanDisk's TransFlash card format. It is primarily used in mobile phones, but because of its size and increasing capacity it is also being used in handheld GPS devices, portable audio players, and expandable USB flash memory drives.

At 15 mm x 11 mm x 1 mm — about the size of a fingernail — it is currently the smallest memory card format commercially available. It is about one-fourth the size of a standard SD card but can be inserted into an adapter which allows the card to be used in devices with an SD card slot. Samsung Sgh D820.

As of July 2006, microSD cards are commonly available in capacities of 128 MB, 256 MB, 512 MB, 1 GB and 2 GB.

History

The microSD format was originally created by SanDisk. It was originally called T-Flash, and then TransFlash, before being rechristened microSD when adopted by the SD Card Association (SDA). Other flash card formats approved by the SDA include miniSD and SD.

The SDA announced the microSD format at CTIA Wireless 2005 on March 14, 2005, and approval of the final microSD specification was announced on July 13, 2005. At launch, the microSD format was available in capacities of 32, 64, and 128 MB. SAMSUNG's Digital World - Điện thoại di động | SGH-D820.