How does a CPU chip work?


Overview: I believe that everyone is no stranger to cpu chips. The cpu chip is a board assembled on the pcb board. When the computer is running, as the “brain” of the computer, it performs systematic operations and centralized control of the computer. Today, let FS Technology take you to understand how the cup runs in the circuit board, thereby driving the brain to operate.We is the best technology website in China, and we have a strong capacity for PCB component procurement.

What is the CPU chip

CPU is the abbreviation of “Central Processing Unit”, sometimes we also call it “processor” or “microprocessor” for short. It occupies a pivotal position in the computer. After the CPU is produced, the PCB manufacturer solders it in the PCB board.

The shape of the CPU

From the appearance, the cpu is a very simple rectangular sheet-like object. A thin piece of silicon wafer the size of a fingernail raised in the middle is the CPU core, called the “die”. There are tens of millions of transistors on the silicon chip of this board, and these transistors are the power source of the PCB. By cooperating with other components on the circuit board, the cpu completes various complex calculations and operations. CPUs are mainly divided into two categories: Intel and AMD, and FS Technology will detail the differences between them in the next issue.

pcb board containing CPU

Why is the CPU soldered on the PCB?

The core of the CPU works very intensively and generates a lot of heat, which is a very test of the bearing capacity of the pcb board. The core of the CPU is very fragile. For the safety of the core, it is recommended that you choose a turnkey pcb assembly company to serve you. To help the core dissipate heat, FS Technology will add a metal cover to the CPU. This process can reduce the accidental damage to the core, and also increase the heat dissipation area of ​​the core.

Surrounding the metal package is the PCB substrate, which leads the signals inside the CPU to the PCB pins. There are many dense gold-plated pins on the back of the substrate, which is a bridge to realize the electrical connection between the CPU and other components, and it also makes the CPU more firmly fixed on the PCB board.


Since the core of the CPU generates a relatively large amount of heat, in order to protect the safety of the core, a CPU heat sink will be installed on the PCB. The heat sink usually consists of a large alloy heat sink and a cooling fan, which is used to quickly dissipate the heat generated by the CPU core.

How the CPU Works

The internal structure of the CPU can be divided into three parts: control, logic, and storage. If the CPU is compared to a machine, its working principle is roughly as follows: the instructions issued by the program – the control unit makes preliminary adjustments – the logic operation unit – the processed data – the data is packed into the memory – Application starts.

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