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[Concept]
Usually means the device can store image data.
The general morphology of the card, it is referred to as "memory card", also known as "digital memory card, digital memory card," Storage Card ".
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History and classification]
Flash invention in 1980 and 1987 for PC
Jie Gang Fujio (Fujio Masuoka): Flash memory inventor.
The jie Gang said, his during Toshiba inauguration, in 1980 and 1987 respectively successfully invented flash memory semiconductors used in personal computers and other electrical appliances.
NOR-type "
NAND-type as Compact Flash external storage device for digital cameras and other electrical
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1989 PC Card, also known as PCMCIA cards
(PersonalComputerMemoryCardInternationalAssociationPC Machine Memory Card International Federation abbreviation), to develop a memory card standard
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1994 CF card (Compact Flash)
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1995 SM card (Smart Media)
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1998 MS cards (Memory Stick), also known as "Memory Stick"
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The 1997 MMC cards (Multimedia Card), also known as the Multimedia Card
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1999 SD card (Secure Digital Memory Card), also known as the Secure Digital card
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2002 XD card (XD Picture Card), also known XD Picture Card
XD taken from the "Extreme Digital", "extreme digital" meant.
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[Advantages]
Compact, easy to carry and simple to use.
Since most memory cards have a good compatibility, it is easy to exchange data between the different digital products.
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[Uses]
Independent storage media for mobile phones, digital cameras, laptops, MP3 and other digital products.
Used in digital cameras store photos
2 for the phone store music files, movies, video
3 is used to store video on a DV (digital video camera)
4 for storing data for GPS
5 for IPC stored on software
6 for MP3, MP4, digital voice recorder, etc.
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【Note】
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1, [compatibility]
Like a DIY computer hardware, memory card compatibility problem exists.
There are some incompatibility issues between different brands of memory cards and digital cameras.
Mainly in the card reader too long, the access speed is longer, or appear to freeze.
Therefore, we must remember clearly the model of the machine corresponding to the memory card. Personally take the machine to try it is safer.
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2, packaging and appearance of the work]
To pay attention to the quality of the printing of packaging is clear
The presence or absence of anti-counterfeit labels, best to call the next ask if you can use a 800 check the authenticity of
Look at the card's overall manufacturing situations, deformation, bump, crack, card edge or without burr Cutaway whether symmetry.
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3, [Warranty time]
To ask the purchased memory card warranty time, another request related invoice receipt is required.
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【Article is excerpted from: Baidu Encyclopedia】
【Network reprint / Just reference】
【Translation is by Goolge】
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