Tuesday , June 22 2021

From A1 to UHS: This is the abbreviation for memory cards



Today, modern

memory cards The talk usually means SD cards. Standard SD (Secure Digital) manufactured in 2001 SanDisk Develop and replace the old MMC cards. SD With great memory and small dimensions, with reading and writing speeds and low prices, the competitors have quickly displaced memory cardsDigital cameras sometimes use flash cards. And the standard memory stick too Sony Still used in older cameras and game consoles.

SD cards are widely used in the market. What memory this is for standard and sometimes cryptic shortcuts you need to know: there are three variants:

SD, miniSD and microSD. The normal SD card is 32 mm in length (24 mm in width and 2.1 mm in height). For example, it is used in cameras. Readers are generally designed for notebooks and computers for this size.

About half of them are miniSD cards. Cards developed for smaller devices have hardly been used and have changed microSD cards. These measurements are 15 mm long, 11 mm wide and 1 mm thick. A custom-built adapter incorporates the highest slot slots for ordinary SD cards. Before purchasing the card, you should be aware that if you use the device and in a format.

Many mobile phones offer a microSD slot and, therefore, the opportunity to multiply the available memory. When choosing a card, consider how much memory a GB memory card can open.

Once you enter it, the user has the option: Will the extra memory be used as a classic removable media, especially for photos, videos and music storage? Or else,

smartphones To permanently expand and adjust the map, for example, applications?

With the first option, the card can be changed quickly, with the second, it becomes a system memory and can not be exchanged. Many of these applications are good for this. smartphoneSD cards are currently in the second specialized option. They take them to the map and optimize the implementation of the applications. A1 is the current standard, A2 gradually gets into the market.

When developing SD cards, the storage capacity has increased. SD Now you can store 512 gigabyte (GB) data. "To make it visible immediately to the name, it's not there shrink HC and XC, "explains Lutz Labs"

c & # 39; t"HC has a size of 32 GB, XC up to 2 terabytes (TB), but this is only theoretical size." SDXC or microSDXC cards are currently 512 GB maximum. Add-on power is still under development. The offers offered by Terabyte cards should be skeptical – it is probably a scam.

In general, be careful fake: SD cards are a popular Internet fraud object, because they are fake from the outside. Many stores attract large and fast cards at the right prices. After delivering it, it remains unwanted: the cards are slower than the ones indicated and all the data are lost, instead of 128 GB, they only have 32 GB and over-supervision overwrites old data.

The Internet Safety Institute Matteo Cagnazzo warns that cheap e-commerce storage is also inadequate. Cheap cards may contain spyware and trojan spyware. For this reason, prices must always be compared. Is one memory card It's much cheaper than dealer dealers, you need to be careful.

SD cards have data transfer rates defined by classes. This indicates the map with a number on the right side of the circle. In 10 circles 10 seconds, at least 10 MB of data prints 10 hand-written cards smartphones plenty enough. "Classes 10 are normal, fast enough in digital cameras and digital cameras smartphones Convince There is not much less than that of these classes, "explained Labs.

With higher camera resolution and larger data, even faster speeding is required. It produces video material in 4K resolution (3840-220 pixels) to select the SD card for the UHS icon. A "U" with a number highlights Ultra High Speed. However, the card needs a device that is also suitable for the use of speed.

UHS-1 is like class speed. UHS-3 cards are 90 MB in seconds. These cards cost more and are useful for professional use.


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