How does a mobile phone motherboard work?

The mobile phone motherboard is one of the most critical components inside the mobile phone. It is responsible for connecting various hardware components and coordinating their work. PHP editor Yuzai will give you a brief introduction to the working principle of mobile phone motherboards. There are many circuits and chips on the mobile phone motherboard, including processors, memories, communication chips, etc. When the mobile phone is turned on, the processor receives the power supply signal from the power supply and starts running the operating system. It is also responsible for controlling and coordinating the work of other hardware. The memory is used to store the data and applications of the mobile phone, and the communication chip is responsible for the communication function of the mobile phone. These hardware components are connected together through wires and connectors on the circuit board to form a complete system. The working principle of the mobile phone motherboard can be said to be the basis for the normal operation of the entire mobile phone. Its stability and performance directly affect the user experience of the mobile phone.

The mobile phone is divided into power part, logic part, radio frequency part, input and output part. First of all, the input and output part refers to the keyboard, display, microphone, earpiece and other logical parts. CPU, font library, temporary storage, etc. are used to control various operations of the mobile phone. The radio frequency part is the signal part, including power amplifier, filter, intermediate frequency IC, etc., the tube receives and transmits, and the power supply is the power supply for each component of the hand. When making a call, you press a number. The number is transmitted to the audio IC code through the CPU. Then it is modulated by the IF IC and amplified by the power amplifier. Then it is emitted by the antenna. The signal reaches the nearest base station. The base station transmits the signal from the optical fiber to the switch in the computer room. Find The corresponding number you pressed will search for the nearest base station and transmit the signal there. The signal from the base station is transmitted to the antenna of the mobile phone. After filtering, IF demodulation, audio decoding, the CPU notifies the ringer, and then the call is made. the same.

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