8G TF memory card capacity is too different, is not common

First of all, I will talk about the calculation of capacity, the landlord knows that the manufacturer is calculated according to the base 1000 system, and the manufacturer's calculation is 1g = 1000 * 1000 * 1000bit instead of 1024 * 1024 * 1024 This difference is big. 8G became. When this capacity is formatted, it is taken up by the file system (note that it is the file system and not the file), so the actual capacity must be less than, and theoretically it should be around.

Your card should be said to be completely normal in the present tense.

Your USB flash drive is not so much worse, it may be that the 8G marked by your USB flash drive is calculated according to normal. This calculation method is not a fixed standard.

It's normal. Profiteers are darker.

Normally, it is much less than the calculated value.

It's commonal, including the licensed Kingston's 8G USB drive that I bought for practical use.

The capacity size is only about that.

Hehe, anyway, now the price of cabbage is high in the U disk, and if you need a large capacity, buy a larger one.

Don't care about that bit of capacity.

This is normal. The Kingston 16G USB flash drive I bought, only 15g.

The other little is reserved to prevent some data blocks from being corrupted.

If you change another one, it must be the same capacity.

I said that the less is reserved, and that is the normal less, because the algorithm is different, and the computer is 1024.

Only the ones missing.

Only 50MB . Not 500mb

It's normal to have a little less of that, and you don't have to take it personally.

And only the difference, that is, 50m. Due to the different manufacturers of flash memory produced, and the flash memory data area is written by the manufacturer, the usable area is smaller.

The technical parameters upstairs have helped me say,U disk this thing factory production is uneven,It's all like this,Or try a few more when you buy it.,Which one is bigger to buy.,I'm like this.。

That's how the 8g one I bought was displayed.

Don't change it, it's useless, it is recommended to buy a mobile hard drive, which is not expensive, and it is about 120g of 20g.

This is a commonality, and it's very normal.

The differences between TF cards and memory cards are as follows:

First, the appearance is different, TF card and SD card have obvious differences in appearance, simply put, SD card is larger and TF card is smaller. The specific size of the SD card is 24mm 32mm, while the specific size of the TF card is 15mm 11mm 1mm. Therefore, it is inaccurate for us to call the memory card of the mobile phone an SD card, it is actually a microSD card, which is what we call a TF card.

Second, the definition is different, SD card means secure digital card, and its working principle is based on semiconductor flash memory. And the origin of the SD card is much earlier, it is the result of research and development at the end of the last century. The English name of TF card is T-Flashcard, which is a memory card, and the memory technology it uses is a relatively new card launched in 2004, about five years later than SD card.

1.Introduce.

Memory cards are divided into various types as devices for storing data, among which SD cards and TF cards are the two more common types. SD card is short for Secure Digital card, while TF card is short for TransFlash card. Although the functions of the two are similar, there are some differences in their appearance, size, storage capacity, etc.

2.Appearance.

Appearance is one of the easiest features to distinguish between the two. The size of the SD card is larger than that of the TF card, the standard size of the SD card is 32mm*24mm*, while the size of the TF card is 15mm*11mm*1mm. As a result, SD cards are thicker and heavier, while TF cards are thinner and lighter.

In addition, when using the TF card, you need to use it with the help of a card reader or SD to TF card holder.

3.Storage capacity.

The storage capacity of SD card and TF card is different. With the development of science and technology, the storage capacity is also increasing. At present, the storage capacity of SD cards can reach up to about 2TB, while the capacity of TF cards is relatively small, and the maximum storage capacity is only 256GB.

This is also one of the main reasons why many people choose an SD card over a TF card.

4.Fields of application.

Although SD cards and TF cards are both devices that store data, they are used in different fields. SD cards are mainly used in digital cameras, **** devices, mobile phones and tablets and other devices. TF cards are more used in small devices, such as mobile memory cards, Bluetooth headsets, etc.

Because the TF card is relatively small and lightweight, it is easy to carry, so it is suitable for the use of portable sail banquet equipment.

5. **。

SD cards and TF cards** vary depending on brand, capacity, and other factors. In general, an SD card with the same capacity is slightly more expensive than a TF card. Moreover, if you take into account factors such as the read and write speed and protection performance of the SD card, the ** of the SD card will be higher.

Therefore, when choosing a storage device, you must choose the corresponding product according to your actual needs.

6.Summary.

The two types of memory cards have obvious differences in appearance, storage capacity, application areas and **. They all have their own advantages and disadvantages and scope of application. When purchasing, consumers should choose a storage device that suits them based on their actual needs and usage environment to ensure the security and stability of their data.

The actual capacity of an 8G TF memory card is calculated as follows:

8*10^6/(8*1024*1024)*8g=

But there are some system files inside each memory card.

In fact, it must be lower, and it is reasonable in between.

1. This is an error caused by different calculation methods.

2. The capacity of the U disk is 1000MB equal to 1G, while the computer hard disk is calculated according to 1024MB.

G's USB flash drive is 8000MB according to the manufacturer's calculation method, and 1024MB=1G in the computer, so the manufacturer's factory 8G=8000 1024=. This is the cause of the error.

Back up the contents of the memory card to another disk, and then format the 8G memory card.

Maybe it's some of your phone's software that is taking up LG

The actual capacity of an 8G TF memory card is calculated as follows:

8*10^6/(8*1024*1024)*8g =

But there are some system files in each memory card, which are actually even lower, and they are all reasonable in between.