2/15/2012

Memory Cards For Cameras And The Age Of SDHC VS SDXC

By Rick Newman


The computer has become an extension to our lives and has created a whole new environment for us. This has also increased the demands of a lot of formats today. The reason for using such a format is the easy access and the portability of the storage device. This can be a very helpful thing since these portable data units are used in everything, but what is the best when the focus is on SDHC vs SDXC.

When shopping for memory cards for cameras, first, we must consider the usefulness of the storage device and the way that it stores information. Some storage device have different types of amounts that they can store. The method of saving data is also different between the various mediums. The type of computer that a person has also depends on the type of storage that they are going to have.

SDHC is the designation for secure digital high capacity. This is an expanded format for the family of storage devices classified as the SD family. The maximum peak for this type of storage medium is 34 gigabytes of information. The data storage is saved with the same method like the previous formats that have been developed. The SDHC format uses sector addressing unlike the older byte addressing standard. The byte method was used for older computer systems.

Byte addressing gives support up to the maximum storage of four gigabytes. Sector addressing can store information up to 2 TB of information on a storage device. It is theorized that SDHC will eventually go beyond 32 gb. This storage medium will not work in older computers that have the label of SD 1.0 because of the format of the data storage.

In 2009, the SDXC or the secure digital extended capacity was revealed at the Consumer Electronics Show or CES. The older SDHC can be expanded to over 32 GB but has been limited by industry standards. This is limited by the SD 2.0 specifications. The first SDXCs are governed by a 3.0 designation. The newer ones are governed by a SD specification of 4.0 which was declared in the year 2011.

SD 3.0 specifications for the SDXC storage device has a 832 Mbit per second transfer rate. This has been labeled as UHS104 speeds. The 2.4 gb transfer is set for the 4.0 specifications for the SD family. The method for this type of the SD family uses exFAT file system. The SD 3.0 will take NTFS and others as well.

SanDisk, Matsushita, Toshiba was the market forefront for the SD industry. The SD csrd was given birth by MMC or the MultiMediaCard. It was developed a competitive edge for the MagicGate DRM storage device known to the world as the Sony Memory Stick. The Memory Stick was put out the year before.

SDHC vs SDXC can be determined by the point of view of the computer user. The benefits of the secure digital extended capacity is that it can go up to 2 TB of data storage. Both can be used by different file systems and computers when trying to store data information. The choice is up to the person and what they want to do when saving the information.




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