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According to the number of layers, there are three types of single-sided, double-sided, and multi-layer circuit boards, which are distinguished according to the circuit layers inside.

The concept of integrated circuits traces its roots back to the late 1950s and early 1960s. Jack Kilby, an engineer at Texas Instruments, and Robert Noyce, co-founder of Fairchild Semiconductor and later Intel, independently conceived the idea of integrating multiple electronic components onto a single semiconductor substrate.

A printed circuit board (PCB) is used to carry electronic components and provide a master circuit for connecting the components to the circuit. From the structural point of view, PCB is divided into single panel, double panel and multilayer board. But most people can't tell the difference, so what are the three differences?

​An Integrated Circuit (IC) functions by integrating various electronic components onto a semiconductor material, typically silicon.

A semiconductor is a substance with a conductivity between that of a conductor and an insulator. It is not very conductive in a pure state, but its conductivity can be adjusted by adding impurities (doping) or changing the temperature. The typical representative of semiconductors is silicon, which is widely used in the manufacturing of electronic components. Semiconductor technology is the cornerstone of modern electronic devices, such as smartphones, computers, digital cameras, etc., all rely on semiconductor chips. In addition, semiconductors are also very important in the energy field, such as semiconductor materials, which are the core of solar cells

Integrated circuits (ICs), also known as microchips or simply chips, are fundamental components of modern electronics.