What is an SD Card? Everything you need to know
What is an SD card?
An SD-card is a removable data saving chip. Normally it comes in the size of a postage stamp or smaller. An SD card can store a tremendous amount of data. These capacity cards are regularly found in computerized cameras or as miniature SD cards in cell phones. With the help of an SD card, you can store a huge amount of information in the form of photos, videos, audio files or document files.
It provides portable storage for mobile users or laptop users. You can easily move your data from one place to another without any loss. In the beginning, SD cards were very large, and their storage capacity was very small. But as time goes on, their size is getting smaller, and their capacity is getting bigger.
Sizes of SD cards
There are three types of SD cards available:
Standard SD card
SD cards were most readily accessible in 1999 from Panasonic, Toshiba, and SanDisk and were the biggest SD card. A typical SD card dimensions are 32.0×24.0×2.1 mm.
It will weigh around two grams. It has nine pins and a write protection switch to protect it from editing.
The scaled-down SD card (Mini SD) was introduced in 2003 and is frequently utilized in cell phones. A mini SD card dimensions are 21.5×20.0×1.4 mm.
It weighs around one gram. It has 11 pins, and it comes without a protection switch.
Micro SD was introduced in 2005; it is the smallest SD card and the latest SD design. A micro SD card dimensions are 15.0×11.0×1.0 mm.
It weighs about 0.5 gram. It has eight pins, and it comes without a write protection switch.
What is Write Protection?
To prevent the coincidental loss of information, numerous SD cards come furnished with a “lock” for the information on the card. This is refined using a little switch, which, whenever empowered, doesn’t permit new information to be composed or old information to be overwritten on the card. Since this security is incorporated into the SD card itself, you don’t have to stress over it. At the point when you don’t want your information to be secured, the switch can be flipped, opening the card for use.
Different capacities of SD cards
One of the early issues with SD cards was their incompetency to hold a large amount of data. What would be the use of an SD card if it could not hold enough amount of information?
To solve this problem, modern types of SD cards (SDhc and SDxc) introduced.
The SDHC convention represents secure information high capacity, and it permits SD cards to store up to 32 GB of information. This is the most well-known type of SD card available, and it essentially changed the job of SD cards in the electronics and digital world.
The SDXC convention represents secure data extended capacity, and it has a most extreme limit of 2 TB. This convention is yet being grown; however, it has permitted manufacturers to make SD cards that can hold up to 256 GB.
How does SD card work?
An SD card depends on flash memory storage chips to have the option to store information. Flash memory is the same sort of innovation utilized in USB flash drives, and it is also being utilized for high-speed personal computers. The SD card has a little circuit board that utilizes electronic current to store information and make it retrievable with any type of SD card reader.
Information in an SD card is put away on a series of electronic segments called NAND chips. These chips permit information to be composed and put away on the SD card. As the chips have no moving parts, information can be moved from the cards rapidly, far surpassing the speeds accessible to CD or hard-drive media. You can insert or edit data thousands of times in an SD card because they contain NAND chips that do not deteriorate easily. Because of them, your data is always safe.
What to do if we lose data on the SD card?
Most of the time, we use a mobile phone for years, but our SD card is even more used. The reason is that no matter who we are, we keep our card with us because it contains photos and videos of our family. Memories of happy moments spent with friends. Or sometimes there are a lot of important documents. What to do if the SD card is not working or data is accidentally deleted?
There is no doubt that most of us face such a situation. But there is no need to worry because you can get back your deleted data because there are sd card recovery companies on the market that have trained staff to handle such situations.
Can we repair corrupt SD cards?
Yes, you can repair a corrupt SD card. It would be best if you used formatting software for this purpose. Formatting software will make it reusable. But one disadvantage of this is that all your important data will be deleted. After that, you must use data recovery software to recover deleted data.
How can we protect our SD card from data recovery?
Sometimes, we want to sell our mobile phone, laptop or any other gadget and we have to give SD along with it. In that case, you can remove your data from the card, but if someone wants to recover it, they can do it easily. An easy and simple way to prevent this is to remove your data from your card and refill it with any junk data. Then delete this data again and put some other junk data in it. Repeat this process 4 to 5 times. The advantage of this is that when someone installs this card in the recovery software, the recovery software will only restore the data that has been inserted in it most recently. He will not be able to go far back.