dried food! Yiwen will show you SD card, TF card and SIM card!

 

​​​1. Definition

SD card yes Secure Digital Card English abbreviations , Literal translation is “ Secure digital card ”. Generally used for digital cameras, etc , For external storage .

TF card That is T-Flash card , Also called micro SD card , Micro SD card .TF Cards are also commonly used for mobile phones 、mp4 And other small digital electronic products .

SIM card It is a user identification card , It is mainly used to authenticate the identity of mobile network customers , The user's personal information is stored and the voice information of the call is encrypted ,SIM A card is a mobile phone card 、 The smart card . The same SIM The card can be used on different mobile phones .GSM The phone can only be plugged in SIM After the card , To access the Internet .

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• 2. difference

• 2.1SD Card and TF The difference and connection between cards

• 1) Different card sizes ,SD card Than TF The size of the card should be large .
• 2) Applied to different products ：

SD Cards are generally used in larger electronic devices ： Like a computer , The camera ,AV Other equipment ;

and TF Generally used in IPC、 Car recorder 、 Fluorite camera 、 Individual soldier 、 mobile phone Other equipment On .

3) Convert instead of

TF Insert the card into the adapter （adapter） It can be converted into SD card , but SD Cards generally cannot be converted to TF card .

4)sd There is one on the card （lock） switch , Write protect switch ,TF The card doesn't have .

5)SD card /TF card Provide 128MB、256MB、512MB、1G、2G、4G、8G、16G、32G、64G、128G etc. The capacity of

6)SD Card and TF Cards are a member of the memory card family , Between the two except appearance 、 There are differences in size , There is not much difference in transmission speed and usage ; Just select the appropriate card slot according to the size of the card slot SD Card or TF Card is enough .

2.2 SIM Card specifications , species

1)SIM card Experienced “ standard SIM card -Micro SIM card -Nano SIM card -eSIM( Development stage )” Stage

Now more and more mobile phones are supporting the use of Nano-SIM card 了 .

2) Different specifications SIM Card conversion

①Nano-SIM Cards can be used SIM The ferrule is converted to Micro-SIM card .

②Micro-SIM Cards can be used SIM Ferrule converted to standard SIM card .

③ standard SIM The card can be cut into Micro-SIM Size card .