PCB circuit boards, also known as printed circuit boards, are providers of electrical connections for electronic components. Its development has a history of more than 100 years; its design is mainly layout design; the main advantage of using circuit boards is to greatly reduce wiring and assembly errors, and improve the level of automation and production labor rate. According to the number of circuit board layers, it can be divided into single panel, double panel, four-layer board, six-layer board and other multi-layer circuit boards.
Since the printed circuit board is not a general end product, the definition of the name is slightly confusing. For example, a motherboard for a personal computer is called a main board, and cannot be directly called a circuit board. Although there are circuit boards in the motherboard, they are not the same. Therefore, when evaluating the industry, the two are related but cannot be said to be the same. For another example, because there are integrated circuit components loaded on the circuit board, the news media called him an IC carrier board, but in fact it is not equivalent to a printed circuit board. We usually say that the printed circuit board refers to a bare board-that is, a circuit board without components.