<P> A memory card, flash card or memory cartridge is an electronic flash memory data storage device used for storing digital information . These are commonly used in portable electronic devices, such as digital cameras, mobile phones, laptop computers, tablets, PDAs, portable media players, video game consoles, synthesizers, electronic keyboards, and digital pianos . </P> <P> PC Cards (PCMCIA) were the first commercial memory card formats (type I cards) to come out, but are now mainly used in industrial applications and to connect I / O devices such as modems . Since 1994, a number of memory card formats smaller than the PC Card arrived, the first one was CompactFlash later SmartMedia and Miniature Card . The desire for smaller cards for cell - phones, PDAs, and compact digital cameras drove a trend that left the previous generation of "compact" cards looking big . In digital cameras SmartMedia and CompactFlash had been very successful . In 2001, SM alone captured 50% of the digital camera market and CF had captured the professional digital camera market . By 2005 however, SD / MMC had nearly taken over SmartMedia's spot, though not to the same level and with stiff competition coming from Memory Stick variants, as well CompactFlash . In industrial and embedded fields, even the venerable PC card (PCMCIA) memory cards still manage to maintain a niche, while in mobile phones and PDAs, the memory card has become smaller . </P> <P> Since 2010, new products of Sony (previously only using Memory Stick) and Olympus (previously only using XD - Card) have been offered with an additional SD - Card slot . Effectively the format war has turned in SD - Card's favor . </P> <Table> <Tr> <Th> Name </Th> <Th> Abbreviation </Th> <Th> Form factor </Th> <Th> DRM </Th> </Tr> <Tr> <Td> PC Card </Td> <Td> PCMCIA </Td> <Td> 85.6 × 54 × 3.3 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> CompactFlash I </Td> <Td> CF - I </Td> <Td> 43 × 36 × 3.3 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> CompactFlash II </Td> <Td> CF - II </Td> <Td> 43 × 36 × 5.5 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> CFexpress </Td> <Td> CFX </Td> <Td> 38.5 × 29.8 × 3.8 mm </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> SmartMedia </Td> <Td> SM / SMC </Td> <Td> 45 × 37 × 0.76 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> Memory Stick </Td> <Td> MS </Td> <Td> 50.0 × 21.5 × 2.8 mm </Td> <Td> MagicGate </Td> </Tr> <Tr> <Td> Memory Stick Duo </Td> <Td> MSD </Td> <Td> 31.0 × 20.0 × 1.6 mm </Td> <Td> MagicGate </Td> </Tr> <Tr> <Td> Memory Stick PRO Duo </Td> <Td> MSPD </Td> <Td> 31.0 × 20.0 × 1.6 mm </Td> <Td> MagicGate </Td> </Tr> <Tr> <Td> Memory Stick PRO-HG Duo </Td> <Td> MSPDX </Td> <Td> 31.0 × 20.0 × 1.6 mm </Td> <Td> MagicGate </Td> </Tr> <Tr> <Td> Memory Stick Micro M2 </Td> <Td> M2 </Td> <Td> 15.0 × 12.5 × 1.2 mm </Td> <Td> MagicGate </Td> </Tr> <Tr> <Td> Miniature Card </Td> <Td> </Td> <Td> 37 × 45 × 3.5 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> Multimedia Card </Td> <Td> MMC </Td> <Td> 32 × 24 × 1.5 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> Reduced Size Multimedia Card </Td> <Td> RS - MMC </Td> <Td> 16 × 24 × 1.5 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> MMCmicro Card </Td> <Td> MMCmicro </Td> <Td> 12 × 14 × 1.1 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> P2 card </Td> <Td> P2 </Td> <Td> </Td> <Td> No </Td> </Tr> <Tr> <Td> Secure Digital card </Td> <Td> SD </Td> <Td> 32 × 24 × 2.1 mm </Td> <Td> CPRM </Td> </Tr> <Tr> <Td> SxS </Td> <Td> SxS </Td> <Td> </Td> <Td> No </Td> </Tr> <Tr> <Td> Universal Flash Storage </Td> <Td> UFS </Td> <Td> </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> miniSD card </Td> <Td> miniSD </Td> <Td> 21.5 × 20 × 1.4 mm </Td> <Td> CPRM </Td> </Tr> <Tr> <Td> microSD card </Td> <Td> microSD </Td> <Td> 15 × 11 × 0.7 mm </Td> <Td> CPRM </Td> </Tr> <Tr> <Td> xD - Picture Card </Td> <Td> xD </Td> <Td> 20 × 25 × 1.7 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> Intelligent Stick </Td> <Td> iStick </Td> <Td> 24 × 18 × 2.8 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> Serial Flash Module </Td> <Td> SFM </Td> <Td> 45 × 15 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> μ card </Td> <Td> μcard </Td> <Td> 32 × 24 × 1 mm </Td> <Td> Unknown </Td> </Tr> <Tr> <Td> NT Card </Td> <Td> NT NT+ </Td> <Td> 44 × 24 × 2.5 mm </Td> <Td> No </Td> </Tr> <Tr> <Td> XQD card </Td> <Td> XQD </Td> <Td> 38.5 × 29.8 × 3.8 mm </Td> <Td> Unknown </Td> </Tr> </Table>

Where is the memory card in a computer