TF transcript. What is a TF memory card? What is the difference between TF card and Micro SD card

In the era of the development of computer technology, a person can no longer do without a smartphone or tablet. The demand for various mobile media is constantly increasing, everyone wants to get the most capacious and speedy one.

Today we will talk about memory cards - the most common accessories for mobile devices. Each gadget now has a special slot for them. We are interested in a TF memory card, what it is and what parameters it has.

Memory card format and its features

There are many formats, as previously electronics companies have sought to develop their own type of device. Now they are trying to unite them.

The oldest format is SD Card, developed at the end of the last century, characterized by its large size. Later it was refined several times and now there are three form factors:

• standard SD card
• mini SD
• micro SD

What is TF?

The standards are gradually becoming outdated, although previously they were widely used in cameras. Micro SD were created by SanDisk in 2004, then they were called TransFlash. The abbreviation TF, which you periodically see on the Internet, dates back to those times. Such cards are small in size, but they are inserted not only into smartphones with small slots, but also into larger equipment using special adapters.

Increase in size

A few years later, the format underwent changes; it was modified and increased in volume, renamed SDHC. Even later, SDXC appeared, with the largest capacity.

There are several more formats - Smart Media, Microdrive and others. They are gradually losing their position in the market and are most often used in specialized devices.

Speed ​​classes

Another important aspect on which the quality of the device depends is speed. It is measured in megabytes, which the card can receive in one second. When there were too many formats, a special classification was introduced.

Now the most common classes are from 2 to 16. The higher, the faster the device works. More importantly, each gadget has its own requirements for the speed of the card. In case of mobile phones— purchasing a Micro SD slower than the fourth class is pointless, and for expensive SLR cameras you need at least the tenth. Requirements for this parameter continue to grow every year, and slow models become outdated and give way to more technologically advanced counterparts on the market.

Youth slang is a subject of discussion in any country; it is often criticized, or even simply scolded. But let's look at it from a different angle and try to understand that language begins with communication, and if slang helps someone communicate, then it is worth paying attention to.

Have you ever found yourself in an English chat or read SMS messages sent by young speakers? Anyone who encounters this phenomenon for the first time may get a slight shock. Even if you still thought that you know English well, you may find yourself in a very unpleasant situation. Is it any wonder that even English-speaking parents do not always understand what their children write (and sometimes even say). Abbreviations and slang words in English are radically different from their Russian counterparts. If in Russian correspondence you can often find shortened versions of the spelling of familiar words (such as bush - you will; vykhi - weekend; dviglo - engine), then in English language There are several unique types of abbreviations:

1. Regular abbreviations, they are also abbreviations, for example IDK - I don't know. There are a lot of such abbreviations, it is quite difficult to remember everything - there are thousands of them. Often native speakers themselves guess the meaning of a particular abbreviation only from the meaning of correspondence in a chat or forum.

2. Words and phrases using numbers. People who have just started learning the English language find it difficult to immediately read and understand such phrases in English. online communication: c u l8r (see you later). At the initial stage, you should not get hung up on these numbers and letters, just perceive the sounds - and you will hear already familiar words and phrases. 2day - - today (today); m8 - [m] - mate (buddy, partner, partner).

3. Another type of writing from lazy inhabitants of the English-speaking part of the Internet is words shortened in the process of colloquial speech: kinda (kind of), wanna (want to), lemme (let me). The specificity and importance of these abbreviations is that we constantly hear them in the oral speech of Americans and British, so they are worth paying special attention to.

By the way, American slang is significantly different from British, and there is also Canadian and Australian. How many other local words and expressions? Probably no one knows this. We made a pathetic attempt to collect a small, but perhaps the most popular part of slang abbreviations into a table for familiarization and, perhaps, even for memorization.

The table can be sorted by English and Russian alphabet in both directions.

TF card - what is it? TF cards, or T-Flash cards, are miniature cards known as TransFlash. TF cards were first introduced in 2004 by SanDisk as the world's smallest memory card, upgraded with NAND MLC to drive the technology.

TF cards have been specially designed for mobile phones and small electronic gadgets. Like all memory cards, they have different speeds and different storage capacities.

TF-card - what is it? Description

TransFlash was announced by the SD Card Association as the third form factor memory card in the Secure Digital family, following SD and miniSD memory cards. After the adoption of the TransFlash standard, the corporation changed the name of the product solution to microSD. TF card capacity - what is it? MicroSD has the same dimensions and specifications as TransFlash, and therefore both memory cards are fully compatible with each other.

TransFlash (TF) and microSD cards are almost the same and can usually be used interchangeably, except that microSD has support for SDIO mode, while TF does not. SDIO allows microSD cards to perform memoryless tasks such as Bluetooth, GPS and

TF card size

TF card capacity - what is it? The physical size of the device is 15mm x 11mm x 1mm. The TF card comes in various storage capacities such as 128MB, 256MB, 512MB, 1GB, 2GB, 4GB, 6GB, 8GB, 16GB, 32GB and 64GB.

What is the difference between TF card and Micro SD card?

A TF card or TransFlash is similar in appearance to Micro SD cards, but is technologically different. The main difference is as follows:

Transfer speeds (read and write speeds).

Memory size availability. The maximum capacity of TF card is 128 GB, SD card is 2 TB.

SD cards have more transistors.

The SD card has a switch on the security segment, whereas the TransFlash does not have such a feature.

There is a size difference between TF card and SD card. TF card - 15 mm × 11 mm × 1 mm. SD card – 24 mm × 32 mm × 2.1 mm.

Structural difference

TF card slot - what is it? A small memory card is usually used as a flash drive. TF card can also be called an electronic storage device that stores digital information. Used in any portable electronic gadgets such as laptops, tablets, computers, MP3 players, PDAs, game consoles, electronic keyboards, synthesizers, mobile phones and digital cameras.

Application

Micro SD card (2GB), also called TF card, is used with an optional adapter to be installed directly into the computer's memory card slot. Trans Flash for mobile phones allows you to:

expand memory on your mobile phone;

transfer content to a new device and share photos/ringtones/music;

quickly and easily transfer files from your PC to external storage.

Each memory card comes with an SD adapter that allows it to be used as a full-size, secure digital card in SD-enabled devices.

Information reading speed

The speed of an SD card is usually rated by its sequential read or write speed. The sequential aspect of performance is most important for storing and retrieving large files (relative to the block sizes built into flash memory), such as images and media. Small data (such as file names, sizes, and timestamps) is subject to a much lower random access rate limit, which can be a limiting factor in some use cases.

TF card efficiency - what is it? New families of SD cards, which include TF cards, improve card performance by increasing transfer speeds. Regardless of the bus speed, the card can signal to the host that it is "busy" until a read or write operation is completed. Maintaining a higher speed is to ensure that the card limits the use of the busy indicator.

What is TF card? Peculiarities

TF cards have a number of features. We list the main ones:

• Security - Cards can protect their content from being erased or modified, prevent access by unauthorized users, and protect content using digital rights management.
• Commands to disable writing - The host device can force the TF card to become read-only to reject subsequent commands to write information to it. There are both reversible and non-reversible host commands for this.
• Open and Locked Cards - The user can assign most full-size TF cards to read-only mode using a sliding tab that covers the card label.

Change Password - The host device can lock the card using a password of up to 16 bytes, usually provided by the user. A blocked card normally communicates with the host, except that it rejects commands to read and write data. A blocked card can only be unlocked by providing the same password. After providing the old password, the host device can specify a new password or disable the lock. Without a password (usually in case the user forgets it), the host device can force the card to erase all data on the card for future reuse (except DRM card data), but there is no way to gain access to existing data.

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