Knowledge

Light waves are electromagnetic radiation generated by electrons in the process of atomic motion. The movement of electrons in atoms of various substances is different, so the light waves they emit are also different. Spectrum is a pattern of monochromatic light separated by a dispersion system (...

Concept explanation: Ethernet is the most common communication protocol standard adopted by the existing LAN. The Ethernet network uses CSMA/CD (Carrier Sense Multiple Access and Conflict Detection) technologies. Ethernet dominates LAN technologies: 1. Low cost (less than 100 Ethernet network car...

How to access and control different computer devices through media in the LAN is preliminarily understood as follows. A long time ago, Ethernet was used to connect all lines of home computers to the bus to realize the mutual communication of computers. When using this method to send data, you nee...

1、 Operating temperature The operating temperature of the optical module. Here, the temperature refers to the housing temperature. There are three operating temperatures of the optical module, commercial temperature: 0-70 ℃; Industrial temperature: – 40 ℃ – 85 ℃; There is also an exp...

The Diode is composed of a PN junction, and the photodiode can convert the optical signal into an electrical signal, as shown below:     Usually, the covalent bond is ionized when the PN junction is illuminated with light. This creates holes and electron pairs. The photocurrent is generated due t...

LAN is the most popular one we use today. What is LAN?  A Local Area Network (LAN) refers to a group of computers interconnected by multiple computers in a certain area using a broadcast channel. The more there are in this area, the more devices that can communicate with each other. And only the ...