FAT stands for File Allocation Table, and it is the method file systems use to link addressable clusters of data to particular files. FAT16 is also known as FAT. A 16 bit binary number is used to hold cluster information which gives 65 526 clusters. A cluster is the smallest portion of space where data is stored. This system can be used on drives up to 2GB. FAT32 was created to accommodate storage capacities up to 2TB (2048GB).
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What does "X"-speed rating means?
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The "X" speed rating gives users a performance indicator on how fast the card can transfer images. Flash cards with higher speed rating X-speed rating are designed to perform faster. The X-speed rating can also be translated into another common measurement of performance - MegaBytes (MB) per second of read speed. To determine the actual MB per second, you must know the value of "X" and do the math using the multiplier number and the value of X as claimed by the product. For example: Value of X = 150 KiloBytes* per second, noted as 150 KB/sec. 133X = 133(multiplier) x 150KB/sec or 20 MB/sec 1 KB = 1,000 Bytes; 1 MB = 1 million BytesNote: The speed may vary due to host and device configuration. |
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What's with card formatting? Do I really need to do it? |
Formatting a card basically insures that it is going to work right with your camera.Just like computers, memory cards have file systems, folders, etc. When you use your camera to format a card, it sets the card up the way the camera needs it to be in order to function properly.For the most part, if you just pop in the memory card it will usually work. Most cameras will automatically put all the necessary "stuff"on the card for you, regardless of whether you've formatted or not.However, formatting a card is a very quick procedure, therefore it is recommended to do it the first time you pop the card into your camera. |
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I receive "memory shortage" message when copy files to the flash memory card, but there still lots capacity left in the card. |
The limit for the root of a FAT formatted device is 255 entries. Create a folder and then the files can be copied into the folder. |
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| Why is my memory card not working in my digital camera/PDA? |
| Most digital cameras and PDAs recognize only FAT16 memory cards. When you format your card with a card reader, please select "FAT" format. You can also format your card with your digital camera or PDA first. |