What is a mobile phone motherboard?

The mobile phone motherboard is the main circuit board in the mobile phone, which contains the main electronic components and interfaces, and some auxiliary electronic components. The motherboard uses insulating material as the base material, which is cut into plates of a certain size according to the requirements (there is copper foil on the insulating board), and holes are drilled according to the wiring requirements (such as component holes, fastening holes, metallized holes, etc.) to realize electronic The interconnection between components; this board is made using electronic printing technology, so it is called a "printed" circuit board.

#The operating environment of this tutorial: MIUI 13 system, Xiaomi 12 mobile phone.

The mobile phone motherboard is the main circuit board in the mobile phone.

Mobile phone motherboard: A board containing main electronic components and interfaces, some auxiliary electronic components, and circuit systems. Solve the problem of disorganized components and lines scattered randomly. The main electronic components are similar to the central processing unit; as the sophistication of the processing technology gradually increases, standard configurations such as sound cards, graphics cards, memory, cameras, etc. need to be plugged into the motherboard, that is, combined into one board;

Function of mobile phone motherboard: integrated mobile phone operation management.

The motherboard uses insulating material as the base material, cut into plates of a certain size as required (there is copper foil on the insulating board), and holes are punched according to wiring requirements (such as components holes, fastening holes, metalized holes, etc.) to realize the interconnection between electronic components. This kind of board is made using electronic printing technology, so it is called a "printed" circuit board.

The motherboard is an important part of the mobile phone and is made of multi-layer insulation board. It is used to support various components and achieve electrical connection or electrical insulation between them. The mainboard of a mobile phone is composed of PCB boards, resistors, capacitors, inductors, diodes, transistors, field effect transistors, interface devices, sensors, integrated circuits and other components. It is used to process internal and external signals and control all functions of the mobile phone, including display , charging, switching on and off, functional applications, etc.

In mobile phones, the motherboard is connected to various functional components through multiple interface cables, such as: power switch cable, screen cable, front camera, main camera, headphone/earpiece cable, touch control Cable arrangement, bottom button arrangement, etc.

In mobile phones, integrated circuits play a leading role. Each integrated circuit has a different function. Know and understand the function and external circuit structure of each chip. , is the only way to master and learn the circuit principles and fault repair of smartphones.

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