SD卡、MINI SD卡、CF卡、TF卡的区别各自的用途（SD card, MINI SD card, CF card, TF card What are their respective USES）

SD卡、MINI SD卡、CF卡、TF卡的区别各自的用途（SD card, MINI SD card, CF card, TF card What are their respective USES） SD卡、MINI SD卡、CF卡、TF卡的区别各自的用途(SD card, MINI SD card, CF card, TF card What are their respective USES) What is the difference between SD card, MINI SD card, CF card and TF card? What is the difference between SD card, MINI SD card, CF card and TF card? What are their respective USES? Reward points: 5 - resolution time: 2007-7-4 13:31 Questioner: xiaogang963-1 best answer the common storage media on the market are CF CARDS, SD CARDS, SM CARDS, memory sticks, xD CARDS and MICRoDRIVE. 1, CF card CF card (Compact Flash was first introduced in 1994 by SanDisk. CF card has pcmcia-ata function and is compatible with it; CF card weight is only 14g, and the size of the cardboard match (43mm x 36m x m3.3 mm) is a solid product, which is the work without moving parts. The CF card USES flash technology, a stable storage solution that does not require batteries to maintain the data stored in it. For the saved data, CF CARDS are more secure and protective than traditional disk drives; Than traditional disk drives and ? PC card the high reliability of 5 to 10 times, and the electricity consumption of the CF card is only 5% of the small disk drives. The CF card USES voltage between 3.3 V and 5V (including 3.3 V or 5V). These excellent conditions make most digital cameras choose CF CARDS as their preferred storage medium. CF card, as the standard of storage industry worldwide, guarantees the compatibility of CF products and guarantees backward compatibility of CF CARDS; As CF CARDS are more and more widely used, manufacturers actively improve the technology of CF CARDS to promote the introduction of new generation of small, light and low-energy advanced mobile devices, thus improving the work efficiency. CFA, based in PaloAlto, Canada, is entitled to free CF, CF and CF technical details. CFA members include 3COM, Canon, kodak, HP, Hitachi, IBM, panasonic, MOTOROLA, NEC, SanDisk, seiko (epson) and SocketCommunications. Moreover, the major digital camera manufacturers have established a special organization for the development of CF products. CF card has the following disadvantages: 1. Limited capacity. While the capacity is doubling, the pixel development of the digital camera is still missing. At the current level of 5 megapixels, the product is the lowest of the popular high-end products, while the civilian mainstream market reaches 3 megapixel levels. The normal civilian JPEG compression format, but the professional TIFF (RAW) format file still can't fit several image data. 2. Larger volume. Compared with other kinds of memory card, CF card slightly larger size, this also limits the use of CF card volume of digital camera, so popular now mostly abandoned the CF card, ultra-thin digital cameras and use more compact volume of SD card. 3. Performance limitations. The temperature of CF CARDS is usually 0 to 40 degrees Celsius. So in an environment of less than 0 degrees, digital cameras are basically "crap". Even professional machines are not immune. Although the current military CF card has a tolerance of -40 degrees Celsius, it is not clear when the price will fall to the point where ordinary people can afford it. The world's largest CF card has a capacity of 640M. General common on the market is 8 MB, 16 MB, 32 MB and 64 MB, 128 MB and 256 MB several (more than 128 MB of ? type). 2, the SD card Secure Digital Memory Card is a new generation of Memory devices based on a semiconductor flash Memory device. The SD card was developed by panasonic, Toshiba and SanDisk in August 1999. The size of a stamp's SD memory card weighs just 2 grams, but it has a high memory capacity, rapid data transmission, great mobility, and good security. The SD card is combined with SanDisk flash memory card control and MLC (MultilevelCell) technology and Toshiba 0.16 u and 0.13 u NAND technology in the volume of 24mm x 32mm x 2.1mm. A nine-pin interface interface is connected to a dedicated drive that does not require additional power to retain information on its memory. And it's an integrated solid medium with no moving parts, so you don't have to worry about mechanical damage. The structure of the SD card can guarantee the security of digital file transfer, it is easy to reformat, so has a broad application field, music, movies, news and other multimedia files can be easily saved to the SD card. So many digital cameras also start supporting SD CARDS. A lot of memory card company have development SD card, panasonic is one of the main current SD card manufacturer, in 2000 from 8 MB to 64 MB SD card capacity is divided into four different levels to meet the needs of different occasions, the data transfer rate of 2 MB/s. By the end of 2001, the single-card capacity had reached 512MB, and the data transmission rate increased to 10MB/s. Panasonic plans to deliver a capacity of 1GB in 2003, a high-performance storage card for 20MB/s, and a capacity of 4GB by 2005. It seems that a new SD card could open up another day for the digital camera storage medium. 3, the SM card Smart Media card was released by Toshiba in November 1995 Memory storage CARDS, which samsung bought in 1996 for production and distribution licenses, have become major SMC manufacturers. To promote SmartMedia become industry standards, founded in April 1996 SSFDC BBS (SSFDC namely SolidState Floppy Disk Card, in fact the most SmartMedia called SSFDC, at the beginning of June 1996 was renamed SmartMedia, and become the competition with Toshiba's registered trademark). SSFDC BBS has more than 150 members, including some big manufacturers such as Sony, Sharp, JVC, Philips, NEC, SanDisk, etc. The SmartMedia card is also a popular microstorage card on the market, and was once very popular on MP3 players. SM card's size is 37 mm x 45 mm x 0.76 mm (figure 1), because the SM card itself has no control circuit, and is made from plastic (was divided into many slices), so small size SM card are frivolous, before 2002 is widely used in digital products, such as old Olympus digital camera and Fuji digital cameras use SM more memory card of the old one. But since the control circuit of the SM card is integrated into digital products (such as digital cameras), this makes the compatibility of digital cameras vulnerable. There are no new digital cameras with SM memory CARDS. Memory Stick SONY's unique personality has created a memory stick. This kind of gum type storage device can be used in almost all SONY audio products. Memory stick The Stick is lightweight and has a wide range of functions. Its high compatibility and unprecedented "general storage Media" (Universal Media) concept, for the future high-tech personal computer, television, telephone, digital camera, video camera, and portable personal audio-visual equipment to provide a new generation of high speed, large capacity of the digital information storage and exchange medium. In addition to small, high stability and copyright protection function and convenient to use in a variety of memory stick series products and so on characteristics, the advantage of the memory stick is SONY launched a large amount of use of the technology products, such as DV cameras, digital cameras, VAIO PCS and color printer, Walkman, IC recorder, LCD TV, etc., and PC card converter, the 3.5 -inch floppy disk converter, export parallel converter and USB, speaking, reading and writing etc all attachments that memory stick can be easily connected to the PC and MAC. A series of companies such as samsung, Iowa, sanyo, casio, Fujitsu, Olympus and sharp have already expressed support for the memory stick. SONY is also seeking recognition of memory sticks in the home electronics and IT industries. Sony will introduce more of its new products on behalf of memory sticks to the domestic market in the future. The drawback of memory stick is that it can only be used in the SONY digital camera, and the capacity is not large enough. SONY's memory stick will be reduced to around a third volume, the basis of the design and manufacture of the memory stick Duo, installation dimensions for only 31 x 20 x 1.6 mm, weight also narrowed the doubled, to 2 grams, this is very similar and xD card, very easy to carry. This kind of memory stick Duo is easy to use in very small mobile phones and digital cameras, as well as various mp3 players and other electronic products. In order to obtain larger capacity and higher speed, SONY launched the new memory stick PRO, this is developed jointly by SONY and Sandisk, shape memory stick in the volume did not change, but can achieve 8 gb capacity, the old equipment will not be able to use this new type of memory stick PRO, but now the production of memory stick PRO slot of the digital products can be backward compatibility, using the traditional memory stick. In addition to serial transmission, memory stick PRO supports parallel transmission to deliver and receive multiple data simultaneously. In parallel transmission mode, the data is transmitted at a speed of more than 160Mbps (theoretical value), making it possible to record the dynamic image of DVD quality in real time. With this kind of speed, memory stick PRO can also support advanced solutions from the upcoming broadband era. Memory stick PRO has no blue bars and white stripes, and all memory stick PRO has copyright protection. In March 2003, the memory stick PRO was designed to create a memory stick ProDuo, a modified version of the memory stick Duo that supports parallel interfaces to the past. Memory stick PRO Duo packs all the advanced features of memory stick PRO into Duo format. It USES a higher density overlay technique. The memory stick ProDuo also supports parallel transport in addition to serial transmission, which can transmit data at speeds of 160Mpbs (the theoretical maximum). This kind of media is more and more used in the broadband era, providing quick and easy replication of high-resolution digital images, as well as methods for large capacity demonstration data. The memory stick allows you to record copyrighted content and high-speed data transmission, maintaining high compatibility across a wide range of products, including small mobile devices. By connecting adapters, it can also be applied to products that are compatible with standard size memory sticks. 5. Small hard drive (MICRoDRIVE) MICRoDRIVE is a large storage medium launched by IBM in the United States. The Chinese name is called a MICRoDRIVE. Digital camera due to the lack of large capacity storage medium, once hindered the development of digital camera, see the IBM market blank in this field, with his advantage in the hard disk manufacturing, resolutely launched and CF card type ? interface consistent micro hard drive, launch capacity up to 340 MB, after more than a year of development, has reached 1 g capacity, dynamic video in AVI format to make digital cameras don't have to use the seconds. Of course, it's expensive to watch at current prices, but it's much better than the SM card, CF card, and memory stick in terms of the cost per Megabyte. Also theoretically, as long as the digital camera support CF card type ? interface also supports the micro hard drive, but in fact, some models such as epson, PC - 3000 type while using ? interface does not support the micro hard disk. The digital camera that currently supports the micro disk has casio QV3000EX, Canon PoWERShotS20, G1 and other models. 6, MMC card MMC (MultiMediaCard, multimedia memory card) by SanDisk and Siemens company launched in 1997, compared with the traditional mobile memory card, its one of the most obvious external characteristic is more miniature size - is the size of ordinary stamps (is about 1/5 of the CF card size), the dimension is only 32 mm x 24 mm x 1.4 mm, and its weight is not more than 2 g. This makes it the world's smallest semiconductor mobile memory card, which has a strong support for portable devices that are increasingly in pursuit of portability. MMC in the beginning of design is focus on mobile phones and pagers in the market, because of its unique advantages such as small size and rapidly after more application fields were introduced, such as digital cameras, PDA, MP3 players, laptop computers, portable game consoles, digital cameras and portable GPS, etc. In addition, the driving voltage is 2.7-to-3.6 V due to lower working voltage. MMC is more power-saving than previous generation products such as CF and SM, and the current capacity is 64MB / 128MB, ATP Electrionics has pioneered 1GB of high-capacity MMC CARDS. 7, xD card The xD card is a new type of memory card that was launched by Japan's Olympus corporation and Fuji limited. It has a very compact shape and is only about the size of a postage stamp. The appearance size is only 20 x 25 x 1.7 mm and the weight is only 2 grams. The memory card domain is the smallest. The xD card adopts a single-sided 18-needle interface, which theoretically has a maximum storage capacity of 8GB. In 2004, Fuji and Olympus jointly launched a storage capacity of up to 1GB XD card. And the read/write speed is higher, (read rate is 5 MB/S, write speed for about 3 MB/S) can satisfy large amount of data written, lower power consumption, xD - Picture memory card can be not only used in PC adapter card and USB card reader at the same time, make it very easy to connect to PC, and it also can cooperate CompactFlash switching adapters, and allowed in as a Compact digital camera Flash card storage media use. While xD CARDS are expensive at the moment, the price of the xD card will be much lower because of falling prices for flash chips and other memory CARDS. Use of xD CARDS (1) try not to format the xD card with the card reader, otherwise it may cause the wrong format of the card, so that it cannot store the photos and cause the death machine phenomenon. (2) when transmitting images with the card reader, the copying operation should be used instead of the cutting operation, and the deletion function of the digital camera can only be used when the operation is deleted. Otherwise, it will also cause the memory card failure. Respondents: 10) pig ぃ ダ - level 2007-6-14 then