A one-minute walk through the difference between a switch and a router
Switch, meaning "switch", is a network device used for electrical (optical) signal forwarding.
Category: Encyclopedia
Internet era! How to prevent personal information leakage
With the advent of the information explosion era, as long as an inadvertent action may leak information.
What is the subnet mask
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.
The difference between nfc and Bluetooth
Cell phone NFC and Bluetooth has now been very widely used, the principle is the radio transmission technology, but they have a fundamental difference.
What are the advantages of full frame SLR camera
As we all know, using a camera to take pictures requires sensitive materials to record images. The sensitive material of traditional cameras is film, while the sensitive material of digital cameras is light sensitive elements (CCD or COMS). Compared with the area of 35mm film, if the size of the sensor area is close to or equal to that of 35mm film, it is a full frame size. The SLR camera with this size is a full frame SLR camera.
Why does the phone turn off when the remaining battery is not zero
If you have ever encountered a situation where your phone automatically shuts down when there is still 20% battery left, the following possible explanations may answer your questions.
What is the difference between power adapter and charger
The working principle of power adapter and charger is the same, both use the principle of AC power conversion to convert AC power into DC power to meet the power needs of the device.
Which one to choose for mobile power? Analysis of the three major types of battery cells
With the popularity of a variety of smart phones, tablet machines, more and more people find that a variety of digital products, especially cell phones own power has been unable to meet the need for life time in daily use, and the emergence of mobile power can be said to a certain extent to solve the problem.
Differences between SSDs and HDDs
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.
How does the camera work?
The working principle of the camera can be divided into four key steps: optical imaging, electrical signal conversion, digital signal processing and image output.
