What is the difference between the memory card XD SD SDHC

The process is almost the same.

SDHC memory card.

There are three main differences from an SDXC memory card, which are as follows:

1. The maximum capacity of SDXC is much higher than that of SDHC, the maximum capacity of SDHC is 32GB, and the maximum capacity of SDXC can reach 2TB.

2. The data transmission speed is different, the transmission speed of SDXC is 300MB s, and the maximum data transmission speed of SDHC is 10MB s.

3. The compatibility of the directory is different, SDHC memory card.

It is one of the most popular silver memory cards on the market, it is compatible with most devices, and it is backward compatible.

Target. The SDXC has just been launched, and it is only compatible with a very small number of devices due to the limited demand in the market.

Abstract:SD card, SDHC card, SDXC card difference is that the specifications are different, SD card supports a maximum of 2GB capacity, SDHC supports a maximum of 32GB capacity, SDXC supports a maximum of 2TB (2048GB) capacity, digital devices that support SDXC card are compatible with SD card and SDHC card, if the device only supports SDH card, then this device can not use SDXC card, but compatible with SD card. If the device only supports SD card, it is not compatible with SDXC, SDHC card.

For these three cards, explain in detail, what are the functions and characteristics of each of them? What is the difference between SD card, SDHC memory card, and SDXC card.

SD card. SD is an earlier version and is said to have evolved from MMC. The maximum size capacity is 2GB.

SD memory card is a small storage ** jointly developed by Panasonic, Toshiba and SanDisk in 1999. SDA) formulates relevant specifications and is responsible for the promotion of SD memory cards. After years of development, SD card has become the most popular memory card format in the world, suitable for mobile phones, digital cameras (DSCs), *******, personal computers and other electronic products.

SDHC card.

SDHC is a high-capacity SD card, also known as SDHowCapacity, which supports a maximum capacity of 32GB.

SDHC, SecureDigitalHighcapacity, large-capacity SD, that is to say, SDs over 2G are called SDHC, because the early SD used the FAT16 file system and did not support large capacity, while SDHC was upgraded to FAT32 to support large capacity above 2G.

SDXC card.

SDXC (SDEXTENDEDCAPACITY) is a new standard released only in last 09, and it supports a maximum capacity of 2TB.

SDXC is the abbreviation of SDEXTENDEDCAPACITY, which is a newly proposed standard, in addition to the capacity can be upgraded to a maximum of 2T, it can mainly support the transmission speed of 300MS, that is to say, it is a "high-speed SD" card. However, there are not many digital cameras that support SDXC cards, mainly new products launched this year, and SDXC is not backward compatible, and does not support ordinary SD and SDHC card slots and card readers.

Editor's note: What is the difference between SD and SDHC and SDXC cards? The difference between SD card, SDHC card, and SDXC card is that the specifications are different, SD card supports a maximum capacity of 2GB, SDHC supports a maximum of 32GB capacity, and SDXC supports a maximum of 2TB (2048GB) capacity.

However, it is still necessary to pay attention to backing up the data during use to avoid problems with the memory card.

SDHC is a high-speed card--- without HC is a regular card - I have never heard of SDXC - it should be a miscellaneous mark!

Answer: The SD card is the initial version, the maximum capacity does not exceed 2GB (in reality, there are also manufacturers who have produced 4G SD cards), and the speed is not more than 20MB The subsequent version of the card is SD.

SDHC is actually the SD specification, which redefines the speed specification with a maximum capacity of 32GB and a speed of up to 30MB S;

SDXC is the SD specification, with a maximum capacity of 2TB and a maximum speed of 104MB S, and SD is still classified as SDXC, with a maximum speed of 312MB S (specification) and a capacity of more than 2TB.

In terms of card readers, SDHC is compatible with some SDXCs, but it depends on the device.

The correct name of the TF card is the microSD card, and there is also a kind of miniSD but it is rare, technically there is only a difference in size between the microSD and SD, there is no essential difference, and it can be put into the SD card reader through the card sleeve.

So, the above things are all some form of SD card, SD SDHC SDXC is the same, SD card and TF card are like moving hard disks and U disks, which are essentially the same thing.