Memory cards are different under other agreements, the appearance and speed, but the methods as the basic unit of storage!
For example, now the general use digital camera memory and memory card (even some high-end machines with micro hard drives) installed in this memory and memory cards of the core of NAND FLASH (This is what we often say the flash memory), the use of these chips and the guide is basically the same USB flash drive.
The flash memory is the closure ofThe first data after the power is not derived from the CD-ROM lost his memory. Current can be rewritten ROM is EEPROM (electrically erasable programmable read-only memory). Able to write a little 'EEPROM and delete them. However, because the operation is based on energy consumption, to write slowly, and high. Therefore, people will find a little ', but not by units of the recording and erasing of the memory block. This is the flash. Its name derives from the unique features to eliminate. Some said that the clear,one-chip flash memory chips!
Therefore, the overall situation in Reading memory card reader with the data, as in the same operation U intraday document with the same method of that!
Flash memory cards are often the cards, in particular the following categories, form the core of the NAND flash memory chip cards:
A: What is the CF card? What are the characteristics of it?
CF card full name is Compact Flash Card, SanDisk in 1994 the first time. Because ofOpening to introduce the technology have broad support in the industry. Then we met more than 100 manufacturers in 1995, a paperback Flash Association, or CFA (Compact Flash Association) established. In the vigorous promotion of the CFA, CF standard for the development and prosperity without precedent, a removable disk interface default has been submitted. Already there are still a lot of manufacturers of digital cameras use CF cards as storage media, but also veryused in laptop computers, TV set-top boxes and mobile phones, including multimedia.
Storage capacity, low cost, compatibility, and these are the benefits of the CF card is more shortages. In addition, the CF card and still KIND (TM), two Type II interface, the use of digital cameras more than CF (TM) interface.
B: What is MS card? What are the characteristics of it?
SmartMedia card details as MS, also known as solid-state floppy disk card (Solid State Floppy Disk CardSSFDC) 1995 Publication of Toshiba Corporation and the CF card of the same generation flash memory card used. Smart Card with support for single-chip memory, and thus limit their maximum capacity, the current maximum capacity of only 128 MB versions of the products. In addition, there is no built-MS interface card, the strong dependence of the equipment so that it can not assure compatibility and speed of CF card.
C: What is the MMC card? What are the characteristics of it?
MMC MultiMedia full nameCard, SanDisk Corporation by the United States and Germany's Siemens (Siemens) companies will jointly develop a multi-function memory card, used mainly for mobile phones, digital cameras, digital cameras and MP3 players and other digital products. Size MMC only 32 mm x 24 mm x 1.4 mm (L x W x D), only 2 grams.
Q: What is the SD card? What are the characteristics of it?
SD card full name Security Digital Card, Matsushita (Panasonic), Dong-Zhi (Toshiba) KingstonSociety and the U.S. have developed a society together. To see the SD card, as derived from MMC, the MMC than for the protection of copyright in the data signal, authentication (SDMI specifications). SD-card and other MP3 player, digital camera, digital camera, with the projected area and MMC cards the same, just a little 'thick, 2.1 mm, but much higher capacity SD card and the speed MMC card reading and writing to four times faster. At the same time, the SD Card interfacecompatible with MMC, SD card interface supports most of the MMC. Currently the SD card in your digital camera spread rapidly, as the mainstream trend.
E: What is a Memory Stick? What are the characteristics of it?
Memory Stick Memory Stick full name, is developed by Japan's Sony Corporation (Sony) by the company to removable media.
Memory Stick family is very large, many species are generally divided into the following types:
Blue Memory Stick commonknown as "Blue" is the most commonly used memory sticks, and longer in digital cameras and a digital camera that was used for the function of protection of copyright, and digital music service from Sony player, "Memory Stick" is will soon have a new version of the Memory Stick specifications, there are not only Chinese name has the same speed as black and copyright protection function, but very fast, up to 32GB capacity, the "Memory Stick Duo" Memory Stick family is the size compact, it canInterface adapter compatible with Memory Sticks, who also had two blue and white, blue under the title "Memory Stick Duo", white, called "Memory Stick Pro MagicGate" copyright protection function, the ability to well more severe. Sony Ericsson (Sony Ericsson) P802 is the phone using the "Memory Stick Duo."
Q: What is the XD card? What are the characteristics of it?
Full Card XD-Picture Card XD name, followed by Japan, Fuji Photo Film and Olympus Corporation, to develop a new generation ofMemory cards, people who have had to replace the SM cards. Now, Olympus and Fujitsu has taken the new digital camera at the bottom of this new type of flash memory cards, compact size, the speed of its main features, but prices higher currents.
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