Secure Digital, technically known as SD, is a proprietary, non-volatile digital memory format widely used in portable electronic devices such as digital cameras and video recorders. SD is different from conventional flash memory in that it can be programmed or modified without destroying the data stored on the device. As with flash memory, SD cards can be erased and written to, but once this process has been done, the data cannot be retrieved. SD cards are also a replacement for film cameras, but they are much smaller and can store more data.
The SD Association is the governing body that licenses and certifies the various manufacturers of digital cameras and other handheld media. These manufacturers have designed and manufactured thousands of different types of SD cards, including standard, pocket, self-contained, and professional cards. Since digital cameras and other devices require storage of data, they require a flexible storage medium such as SD.
The term micro SD is used to describe the smallest size and the greatest storage potential of the SD memory cards. As compared to traditional flash memory cards, micro-SD cards have a much lesser random access speed and much higher read/write speeds. This means that micro-SD cards are perfect for recording high-quality videos, games, and other digital content. However, the SD card does not come without its drawbacks. Although fast, memory cards have slow upload and download speeds. Also, it is relatively challenging to formatting a micro SD card due to the lack of prior knowledge on the process.
There are many professional and amateur digital camera users who are concerned about security when it comes to their digital pictures and videos. This is why the SDHC card is gaining more popularity among these people. SDHCP is the standard SD card specification in use by digital camera manufacturers worldwide, which assures maximum security for digital pictures and videos taken using these memory cards.
Basically, there are two kinds of SD cards: those that work differently and those that do not. The difference between these two types is the size and the storage capacity of the content it can store. The smaller and thinner SD cards are more pocket friendly. Meanwhile, the larger and heavier NAND flash memory cards are more durable and are commonly used in professional digital cameras as well as mobile phones.
Currently, there are many manufacturers that make both the SD card and the NAND flash memory cards. Most of the time, buyers prefer to buy the SD cards from camera brands that already manufacture them, especially if they are looking for high quality and durability. However, with the growing popularity of micro-SD cards, especially due to its higher storage capacity and fast downloading speeds, there are now new alternatives in the market. These are the SanDisk and the HGST micro-SD cards.
Like most other SD cards, micro-SD cards come with different capacities and speed classes. They can be classified according to their usage and speed, as SDX and SDIO. The most common SD cards classified according to their speed class are: general transfer, read only, read/write, or mixed mode. General transfer mode transfers the data in just one block every time.
Hugdiy is the latest technology in use nowadays and is compatible with the latest cameras and digital photo studios. It is considered to be best for motion photos and high definition videos and stills. The SD association has rated the various SD cards based on the storage capacity and speed. You can check out their website: hugdiy.com for the complete list of available SD cards and for a good deal on any micro-SD card.
