1.CF
card
The full name of the CF card is a Compact Flash was launched in 1994 by SanDisk Corporation, one of the largest Flash Memory card vendors. Size of 43mm x 36mm x 3.3mm, weighs approximately 15 grams or less, due to launch early, so the development of more mature, the use of the ATA protocol CompactFlash interface 50-pin, developed to its maximum capacity by the original 8M, 16M all the way to jump to up to 320MM as much as the maximum capacity in the market, the surface can see in the 256M.
Comment: The application earlier coupled with the capacity advantage, many digital cameras on the use of this flash memory cards as storage media, and better compatibility, there are also a lot of reader device support, but it had The large size and weight will limit its development.
2.SM card
The full name of the SM card SmartMedia, "was released in November 1995 by Toshiba (TAEC) Flash Memory storage card, Samsung and Toshiba is the most important SmartMedia manufacturers. From its size, 45mm x 37mm x 0.76mm making it the thinnest Flash Memory storage card, weighs only 1.8 grams. Interfaces, SmartMedia, using a 22-pin interface, we only see the outside of the card flat Goldfinger. Capacity has been developed to 128M, the control formats are not uniform, its compatibility is not good in the past, often the format is incompatible, and sometimes different manufacturers of SM cards used in digital cameras or MP3 interaction can not be used directly, or new large-capacity SM card can not be the old SM reading device to read the strange phenomenon, but now Toshiba is trying to reunification of this control format, hoping to improve its compatibility level.
Comments: The early design problems it has many flaws on the compatibility, the advantage is small size, low price is the cheapest Flash Memory.
3.MMC card
MMC's full name is "the MultiMediaCard" - is a compact high-capacity flash memory card, Siemens Siemens (now known as Infineon) and the first CF SanDisk introduced in 1997. Due to its more advanced packaging technology, and is now quite mature, it dimensions of about 32mm × 24mm × 1.4mm, weighing less than 2 g, 7 pin, its volume is even smaller than SmartMedia, not afraid of the impact of can be repeatedly read and write records of 300 000, the drive voltage of 2.7-3.6V, the maximum capacity of more than 64M, 128M capacity has also been released this year. This flash card has been widely used on mobile phones, digital cameras, digital cameras, MP3 and other digital products.
Comments: small and light very much in line with the need for removable storage, but its architecture is more simple, is also good compatibility between the different devices from common, the most widely used in MP3, this excellent characteristics for other mobile devices more and more optimistic.
4.SD card
The full name of the SD card is the "Secure Digital", which means "Secure Digital", which is jointly launched by the two Japanese Electronics Group, Panasonic, Toshiba and SanDisk, first released in August 1999. SD card data transfer and physical specification chosen by MMC evolved, so the size and MMC almost the size of 32mm x 24mm x 2.1mm. Only is thicker than MMC, 0.7mm, to accommodate the larger capacity storage unit, the weight of adhering to the MMC is light weight, weighing only about 1.6 grams. Is the SD card and MMC card to maintain upward compatibility, that is, the MMC can be the new SD equipment access, but the SD card can not be MMC device access. From the difference in appearance, due to the SD interface in addition to 7-pin to retain the MMC is still on both sides adds a 2-pin as a data line, and with a physical write-protect switch. In terms of capacity, the market has 64MB of products, Toshiba has to produce a 128MB product.
Emerging in order to adapt to the miniaturization, SD card Mini SD card, mainly to attack mobile phones, PDAs, handheld information terminals.
Comment: SD card is indeed a very impressive development potential, almost set a variety of advantages, and even claims to copyright protection is the highest level of security Flash Memory, is just too expensive, is not currently used by most manufacturers.
5.SONY company's Memory Stick (referred to as MS card)
Since July 1997 SONY announced the development of the Memory Stick, Memory Stick has been fully used in Sony's full range of products in SONY products from 4M to 128M capacity products can be of different applications, the product line of digital equipment The most abundant SONY even trying to make the Flash Memory as an industry standard. SONY own, said its Chinese name is the memory stick, in fact, it is the size of 50mm x 21.5mm x 0.28mm, 4 grams of weight. Then the product is a single flat 10-pin adapter with separate needle groove, and the write-protect switch. Demand of the increasing emphasis on copyright protection, December Sony in 1999 launched a new with MagicGate the Memory Stick, the main change is to add a copyright protection technology known as the MagicGate the Sony patent to comply with the SDMI standard.
SONY Memory Stick card, due to the different shape size, divided into three sizes, namely, the capacity of the Memory Stick, Memory Stick PRO, Memory Stick DUO, the capacity between 16MB-128MB Memory Stick, Memory Stick Pro between 256MB-1GB, the future can reach 32GB Memory Stick DUO capacity minimum, 16MB-32MB, via an adapter, like the original MS card inserted in the slot.
MS PRO is a high-end products in the MS family, despite the same shape and MS card, but its transfer speeds increase, the lowest recorded speed of 15Mbps. Can be adapted to record a continuous dynamic image.
Comments: Due to the strong image of SONY in the industry, the Memory Stick in the products has been fully applied, but unfortunately can not open industry standards, it is impossible for other vendors' products, but the price is too expensive, 64M product you need about 1000 yuan.
Fuji film and Olympus Optical Co. as a follow-up to the SM card products to the successful development of the xD Picture Card
New media developed specifically for digital cameras is characterized by small size, large capacity. Dimensions in the small memory card is the smallest, only lengthwise 20 × 25 × 1.7mm. Fuji Photo Film and Olympus Optical Co., this digital camera to replace the SM card. XD Picture Card card is scheduled for the 8GB product to solve this problem.
The full name of the CF card is a Compact Flash was launched in 1994 by SanDisk Corporation, one of the largest Flash Memory card vendors. Size of 43mm x 36mm x 3.3mm, weighs approximately 15 grams or less, due to launch early, so the development of more mature, the use of the ATA protocol CompactFlash interface 50-pin, developed to its maximum capacity by the original 8M, 16M all the way to jump to up to 320MM as much as the maximum capacity in the market, the surface can see in the 256M.
Comment: The application earlier coupled with the capacity advantage, many digital cameras on the use of this flash memory cards as storage media, and better compatibility, there are also a lot of reader device support, but it had The large size and weight will limit its development.
2.SM card
The full name of the SM card SmartMedia, "was released in November 1995 by Toshiba (TAEC) Flash Memory storage card, Samsung and Toshiba is the most important SmartMedia manufacturers. From its size, 45mm x 37mm x 0.76mm making it the thinnest Flash Memory storage card, weighs only 1.8 grams. Interfaces, SmartMedia, using a 22-pin interface, we only see the outside of the card flat Goldfinger. Capacity has been developed to 128M, the control formats are not uniform, its compatibility is not good in the past, often the format is incompatible, and sometimes different manufacturers of SM cards used in digital cameras or MP3 interaction can not be used directly, or new large-capacity SM card can not be the old SM reading device to read the strange phenomenon, but now Toshiba is trying to reunification of this control format, hoping to improve its compatibility level.
Comments: The early design problems it has many flaws on the compatibility, the advantage is small size, low price is the cheapest Flash Memory.
3.MMC card
MMC's full name is "the MultiMediaCard" - is a compact high-capacity flash memory card, Siemens Siemens (now known as Infineon) and the first CF SanDisk introduced in 1997. Due to its more advanced packaging technology, and is now quite mature, it dimensions of about 32mm × 24mm × 1.4mm, weighing less than 2 g, 7 pin, its volume is even smaller than SmartMedia, not afraid of the impact of can be repeatedly read and write records of 300 000, the drive voltage of 2.7-3.6V, the maximum capacity of more than 64M, 128M capacity has also been released this year. This flash card has been widely used on mobile phones, digital cameras, digital cameras, MP3 and other digital products.
Comments: small and light very much in line with the need for removable storage, but its architecture is more simple, is also good compatibility between the different devices from common, the most widely used in MP3, this excellent characteristics for other mobile devices more and more optimistic.
4.SD card
The full name of the SD card is the "Secure Digital", which means "Secure Digital", which is jointly launched by the two Japanese Electronics Group, Panasonic, Toshiba and SanDisk, first released in August 1999. SD card data transfer and physical specification chosen by MMC evolved, so the size and MMC almost the size of 32mm x 24mm x 2.1mm. Only is thicker than MMC, 0.7mm, to accommodate the larger capacity storage unit, the weight of adhering to the MMC is light weight, weighing only about 1.6 grams. Is the SD card and MMC card to maintain upward compatibility, that is, the MMC can be the new SD equipment access, but the SD card can not be MMC device access. From the difference in appearance, due to the SD interface in addition to 7-pin to retain the MMC is still on both sides adds a 2-pin as a data line, and with a physical write-protect switch. In terms of capacity, the market has 64MB of products, Toshiba has to produce a 128MB product.
Emerging in order to adapt to the miniaturization, SD card Mini SD card, mainly to attack mobile phones, PDAs, handheld information terminals.
Comment: SD card is indeed a very impressive development potential, almost set a variety of advantages, and even claims to copyright protection is the highest level of security Flash Memory, is just too expensive, is not currently used by most manufacturers.
5.SONY company's Memory Stick (referred to as MS card)
Since July 1997 SONY announced the development of the Memory Stick, Memory Stick has been fully used in Sony's full range of products in SONY products from 4M to 128M capacity products can be of different applications, the product line of digital equipment The most abundant SONY even trying to make the Flash Memory as an industry standard. SONY own, said its Chinese name is the memory stick, in fact, it is the size of 50mm x 21.5mm x 0.28mm, 4 grams of weight. Then the product is a single flat 10-pin adapter with separate needle groove, and the write-protect switch. Demand of the increasing emphasis on copyright protection, December Sony in 1999 launched a new with MagicGate the Memory Stick, the main change is to add a copyright protection technology known as the MagicGate the Sony patent to comply with the SDMI standard.
SONY Memory Stick card, due to the different shape size, divided into three sizes, namely, the capacity of the Memory Stick, Memory Stick PRO, Memory Stick DUO, the capacity between 16MB-128MB Memory Stick, Memory Stick Pro between 256MB-1GB, the future can reach 32GB Memory Stick DUO capacity minimum, 16MB-32MB, via an adapter, like the original MS card inserted in the slot.
MS PRO is a high-end products in the MS family, despite the same shape and MS card, but its transfer speeds increase, the lowest recorded speed of 15Mbps. Can be adapted to record a continuous dynamic image.
Comments: Due to the strong image of SONY in the industry, the Memory Stick in the products has been fully applied, but unfortunately can not open industry standards, it is impossible for other vendors' products, but the price is too expensive, 64M product you need about 1000 yuan.
Fuji film and Olympus Optical Co. as a follow-up to the SM card products to the successful development of the xD Picture Card
New media developed specifically for digital cameras is characterized by small size, large capacity. Dimensions in the small memory card is the smallest, only lengthwise 20 × 25 × 1.7mm. Fuji Photo Film and Olympus Optical Co., this digital camera to replace the SM card. XD Picture Card card is scheduled for the 8GB product to solve this problem.
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