What do out and in interfaces mean?

The out interface refers to the output interface, and the in interface refers to the input interface. The out interface generally represents the audio source line output interface, which is used to connect loads, such as speakers, headphones, etc.; while the in interface generally represents the audio source line input interface, which is used to connect CD players, mobile phones, MP3 players, computers, etc.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

The out interface (Output) means output, and the in interface (Input) means access.

OUT generally represents the audio source output interface, which is used to connect loads, such as speakers, headphones, etc.

IN generally represents the audio source input interface, used to connect CD players, mobile phones, MP3 players, and computers.

The power amplifier is commonly known as the "amplifier". Its function is to amplify the weak signal from the audio source or preamplifier and push the speaker to play sound. A good sound system amplifier plays an important role. Power amplifiers can generally be divided into three categories: "professional power amplifiers", "civilian power amplifiers" and "special power amplifiers".

"Professional amplifiers" are generally used for sound amplification in conferences, performances, halls, halls, venues and pavilions. The design is mainly based on high output power, complete protection circuit and good heat dissipation. When used for HI-FI playback, the sounds of most "professional amplifiers" sound dry and hard.

The detailed classification of "civilian power amplifiers" includes "HI-FI power amplifiers", "AV power amplifiers", "KALAOK power amplifiers" and the so-called "comprehensive power amplifiers" that integrate various common functions into one.

"Special power amplifier", as the name suggests, is a power amplifier used in special occasions, such as sirens, low-voltage power amplifiers for cars, etc.

Extended information

Computer chassis motherboard is also called mainboard, systemboard or motherboard; it is divided into commercial motherboard and There are two types of industrial motherboards. It is installed in the chassis and is one of the most basic and important components of the microcomputer. The motherboard is generally a rectangular circuit board, on which the main circuit systems that make up the computer are installed. Generally, there are BIOS chips, I/O control chips, key and panel control switch interfaces, indicator light connectors, expansion slots, motherboards and plug-in cards. DC power supply connectors and other components.

The motherboard adopts an open structure. Most motherboards have 6-finger 15 expansion slots for the control cards (adapters) of PC peripherals. By replacing these plug-in cards, the corresponding subsystems of the microcomputer can be partially upgraded, giving manufacturers and users greater flexibility in configuring models. In short, the motherboard plays a pivotal role in the entire microcomputer system. It can be said that the type and grade of the motherboard determine the type and grade of the entire microcomputer system. The performance of the motherboard affects the performance of the entire microcomputer system.

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