Advertisement

Encyclopedia

What is the subnet mask

Mar 22, 2026
Subnet mask is also called network mask, address mask and subnet mask. It is used to indicate which bits of an IP address identify the subnet where the host is located and which bits identify the bit mask of the host. The subnet mask cannot exist alone. It must be used in combination with the IP address. The subnet mask has only one function, which is to divide an IP address into two parts: network address and host address. The subnet mask is the basic knowledge that everyone who uses the Internet must master. Only by mastering it can you truly understand the TCP/IP protocol settings. Let's explain what subnet mask is in simple terms.
Read More

Differences between SSDs and HDDs

Mar 20, 2026
SSDs have been sold for a long time. However, at present, mainstream installations are still purchasing traditional mechanical hard disks, while most SSDs are installed in high-end configurations. Due to the small capacity and high price of SSDs at present, few mainstream users choose SSDs. However, with the development of technology, it is also a trend that SSDs gradually become mainstream. Next, we will introduce the advantages of SSDs and the differences between SSDs and ordinary HDDs.
Read More

What is resolution? What does resolution mean?

Mar 17, 2026
This word is believed that as long as you are familiar with the digital field, you will not be unfamiliar with it. Resolution is the precision of screen image, which refers to the number of pixels displayed by the display. Since the dots, lines and surfaces on the screen are all composed of pixels, the more pixels the display can display, the finer the picture will be, and the more information can be displayed in the same screen area, so the resolution is one of the very important performance indicators. The whole image can be thought of as a large chessboard, and the resolution is expressed by the number of intersection points of all longitude and latitude lines.
Read More

Wireless charging principle

Mar 15, 2026
The principle of wireless charging is through near-field induction, the wireless charging device conducts energy to the charging terminal device, and then the terminal device converts the received energy into electrical energy and stores it in the device's battery.
Read More

What is IMEI code

Mar 14, 2026
IMEI code, namely the serial number of the mobile phone. It is the abbreviation of International Mobile Equipment Identity. Like the identity card of a mobile phone, it is used to help identify the identity of a mobile phone. Each mobile phone has only one serial number, which is not the same. We usually match the serial number displayed after pressing the "* # 06 #" key on the mobile phone with the barcode on the mobile phone box and the serial number in the back of the mobile phone after removing the electric board. If the three are the same, it is more likely to be genuine goods (not excluding second-hand goods).
Read More