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What is Diode? [Explained]
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...
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Preliminary Understanding of LAN
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 ...
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What is an Ethernet switch and how does it is work?
With the rapid development of computers and their interconnection technology (also known as “network technology”), Ethernet has become the short-range two-layer computer network with the highest penetration rate so far. The core component of Ethernet is the Ethernet switch. Manual and...
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What is VCSEL laser?
VCSEL, which is called a Vertical Cavity Surface Emitting Laser in full, is a kind of semiconductor laser. Currently, most VCSELs are based on GaAs semiconductors, and the emission wavelength is mainly in the infrared wave band. In 1977, Professor Ika Kenichi of Tokyo University of Technology fir...
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Network Classification of PAN, LAN, MAN and WAN
The network can be classified into LAN, LAN, MAN, and WAN. The specific meanings of these nouns are explained and compared below. (1) Personal Area Network (PAN) Such networks can enable short-distance network communication between portable consumer appliances and communication devices, This cov...
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What is the Received Signal Strength Indication (RSSI) in detail
RSSI is the abbreviation of Received Signal Strength Indication. The received signal strength characterization is calculated by comparing two values; that is, it can be used to determine how strong or weak the signal strength is compared with another signal. The calculation formula of RSSI...
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