SD Card
Memory Stick
MMC Card
Digital Cameras undoubtedly fill an important role in teenagers's lives.If the digital camera is a computer host, then the memory card is equivalent to a computer hard drive. The memory card can not only record image files, but also store other types of files. Common memory cards are CF cards, SD cards，Memory Stick and MMC cards.
CF Card
CF Card is compatible with PCMCIA-ATA; CF Card weighs only 14g, only a matchbook-sized (43mm x 36m x m3.3mm), is a solid product, that is, work without moving parts. CF card is flash memory (flash) technology, is a stable storage solution, which does not require batteries to maintain stored data. Of the saved data is, CF card than conventional disk drives security and protection are higher; than conventional disk drives and PC Card type Ⅲ 5 to 10 times as high reliability, and the CF card, power consumption is only for small disk drives of 5%. And now,less 3.5 card reader is compatible with it.But there are 3 disadvantages about it:
1 capacity is limited. Although the CF card capacity in improving, but still can not keep up the pace of development-pixel digital camera.
2. CF card size slightly too large, it also limits the use of CF card size digital camera.
3 CF cards are generally 0-40 degrees Celsius operating temperature. Therefore, 0 degrees or below environment, a digital camera can be basically said, has become a "waste."
SD Card
SD Card (Secure Digital Memory Card) is a flash memory device based on a new generation of semiconductor memory devices. SD Card by Panasonic, Toshiba and SanDisk Corporation in the United States in August 1999 jointly developed. Like a stamp size SD memory card, weight only 2 grams, but it has a high memory capacity, fast data transfer rates, great flexibility and a very good mobile security. With the development of internal card reader,SD card is more and more popular. SD card structure can guarantee the security of digital file transfer, it is very easy to re-format, so has a wide range of applications, music, movies, news and other multimedia files can be easily saved to the SD card. Therefore, many digital cameras have begun to support SD cards.
Memory Stick
Sony has always been a loner's character created a Memory Stick was born. Memory Stick (Memory Stick) a thin, light, and have a fully diversified functions. In addition to small size, has high stability, and copyright protection, as well as easy access to a wide range of Memory Stick products and other characteristics, the Memory Stick Sony's advantage lies in the extensive use of the technology products, such as DV cameras , digital cameras, VAIO personal computers, color printers, Walkman, IC recorders, LCD TV and PC Card converter, 3.5-inch floppy disk converter, parallel exports converter and USB reader full line of accessories such as Memory Stick can be easily made to achieve with the PC and Mac connectivity.
MMC Card
MMC (MultiMediaCard) by SanDisk and Siemens company launched in 1997, with the traditional removable memory card compared to the most obvious external feature is even more miniature size - only the ordinary stamp size (CF card size is 1 / 5 or so), Dimension is only 32mm × 24mm × 1.4mm, while the weight of not more than 2g. Making it the world's smallest removable storage card semiconductors, which are increasingly seeking for the various types of portable handheld devices to form a strong support?
There was vigorous development in memeory card and card reader. What's the next-generation story card?
