A memory card or flash card is used for storing digital information through electronic flash memory. These memory cards are used in digital cameras, mobile phones, laptop computers, MP3 players, and video game consoles. They are compact, recordable, and they retain data without power.
PC Cards were among the first commercial memory card formats to come out in the 1990s but are now relegated to industrial applications and for connecting I/O devices such as modems. A number of other memory cards came out in the 1990s, and the need for smaller cards for mobile devices drove the size of the cards down. As of 2001, SmartMedia alone had captured 50% of the digital camera market. In 2005 SD/MMC had taken over SmartMedia’s position; however, with stiff competition coming from Memory Stick variants and CompactFlash. SD-Card had a slight advantage as of 2010 when Sony and Olympus products offered additional slots for SD-Cards.