An SD Card (
Secure Digital Card) is an ultra small
flash memory card designed to
provide high-capacity memory in a small size. SD cards are used in many small
portable devices such as digital video camcorders,
digital cameras,
handheld
computers, audio players and mobile phones. In use since 1999, SD Memory Cards
are now available in capacities between 16
Megabytes and 1
Gigabyte. An SD card
typically measures 32 x 24 x 2.1 mm and weighs approximately 2grams.