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What does Memory Card mean?
A memory card is a type of storage device that is used for storing media and data files. It provides a permanent and non-volatile medium to store data and files from the attached device. Memory cards are commonly used in small, portable devices, such as cameras and phones. The most common type of data that’s being stored on a memory card include videos, pictures, audio and other types of file formats. It’s also used for smaller, portable as well as remote computer devices. The majority of the current products are going to use flash memory, even though there are other technologies which are currently under development.
A memory card is also known as a flash card.
Types of memory cards
CompactFlash (CF)
The forerunner to the SD card, the original CF cards were designed on the Parallel Advanced Technology Attachment standard and were no larger than a matchbook. CF cards included a microcontroller and were used as flash memory storage for high-resolution photography. CF and SD cards lack built-in USB computer device connectivity.
MicroSD
In 2005, SanDisk and Motorola teamed up to introduce the original microSD product, then known as TransFlash, as a 128 GB removable card for mobile phones. In June 2016, SanDisk (now part of Western Digital Corp.) launched a suite of 256 GB microSD cards, including Ultra microSDHC and microSDXC UHS-I cards geared for Android-based devices.
MMC
MMCs are less common with the arrival of SD card technology. Most computer hardware vendors no longer provide ports for inserting an MMC device. A new development is embedded MMC, or eMMC, in which the flash card is integrated on the computer motherboard along with controller software to use the eMMC as a bootable system drive. MMCs weigh approximately two grams.
SD Card
Postage stamp-sized device widely used in a variety of handheld devices, including digital cameras, smartphones and tablets. SD cards secure digital data by encrypting it on the device. SanDisk offers the highest capacity SD card at 512 gigabytes (GB).
SDHC Card
This card has the same form factor as an SD card, with specifications that define SDHC card capacities from 4 GB to 32 GB. These devices were developed to tackle high-definition video and high-resolution images. Although SD cards will work in an SDHC device, an SDHC card will not function in an SD card-based digital camera or card reader.
Sony Memory Stick
Memory Stick technology as a removable flash storage device to transfer photos and high-definition video.
xD-Picture Card
A card format designed for use only with Olympus digital cameras.
SmartMedia Card
How much storage space does a memory card provide?
Memory cards can vary in the amount of storage space based on the type of memory card. However, most memory cards today range in size from as small as 4 gigabyte (GB) up to as large as 128 gigabyte. Older memory cards may be even smaller than 4 GB and you can find memory cards that are larger than 128 GB but they will have higher costs.
How can I increase the size of a memory card?
The size of a memory card is fixed and cannot be increased. If your memory card is full, consider deleting some of the files stored on the memory card or consider moving the files to a different storage device, or purchasing a memory card with more capacity and replace the memory card with the new card.
Advantages of memory card
- You can store files in your memory card upto 128 GB as SanDisk intros first 128 GB microSD memory card.
- They don’t damage as its a tiny device which fits in your gadget or mobile.
- The new generation of memory card is more lighter which comes with extra storage and security.
- It requires less amount of power.
- Memory Card is noiseless.
- 64 GB Memory Card is one of the most popular used with the name of SD card.
- Easily removable and replace into any device
Disadvantages of memory card
- It can break easily.
- With its tiny size it can be lost or misplaced on anywhere.
- As every other storage device such as hard disk or pen drive it has also same disadvantage that it can corrupt the data anytime. So its better to create a backup of your files elsewhere.
Features
Choosing the Correct Capacity
It’s easy to think that bigger is better when it comes to capacity, but it really depends on the application. Many photographers prefer several lower-capacity cards to a single high-capacity one, because if one breaks or fails and work is compromised, they still have the data they’ve saved on the other cards. Another advantage to this approach is that when traveling, photographers can use one card per day to keep a succinct and orderly record of which day’s images are on which card. Those who shoot high-speed bursts, such as sports photographers, and those who record lots of video, often prefer one card with lots of storage space, since it allows for more continuous shooting without having to stop and switch to a new memory source.
Another consideration when deciding upon card capacities is the type of files you shoot, generally, and how large your average file size is.
Speed Considerations
It’s not just about how much data your card can store, but also how fast it can store and move it. Time-saving is a ubiquitous concern nowadays, and cards with faster write speeds will enable you to get more shots in a given period of time, while higher read speeds will improve workflow efficiency by speeding up card-to-computer file transfers.
Protecting Your Work
Apart from capacity and speed, data protection is a concern. A lot of cards feature Error Correction Code (ECC), which enhances reliability by automatically detecting and fixing transfer errors. This is a great asset in any application, but would be especially important in situations in which you have to work quickly and deliver results in a very short time, such as professional sporting events or news coverage. When you need to upload or send files so that your work can be seen by the world before your competitors’, having a reliable card with a small chance of failure or errors is critical.
Picking a Card that's Built to Last
A card durability may also be an important point of consideration. There are really two types of toughness for a memory card: the ability to withstand a large number of insertion/removal and read/write cycles, and the ability to survive environmental factors.
There is a greater degree of variation in the other kind of durability. Certain cards are built to live through bumps, drops, and even heavy burdens that would break or crush most devices their size, while others are designed to last through extremely cold or hot temperatures that would render most electronics useless. There are cards that are water resistant and even those that are completely waterproof. Additionally, some models are built to survive exposure to magnetic fields and X-rays.
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