印刷电路板(Printing Circuit Board,PCB)是电子产品中电路元件的支撑部件,它提供电路元件和元件之间的电气连接,同时PCB设计是电子产品设计的重要环节之一,在现代电子设备中,印刷电路板(PCB)发挥着越来越重要的作用。在PCB设计的过程中,Layer(层)的概念在PCB整个设计过程中尤为重要。 Printed Circuit Board (PCB) is a supporting component of circuit components in electronic products. It provides the electrical connection between circuit components and components. PCB design is one of the most important parts of electronic product design. In modern electronic equipment , Printed circuit board (PCB) play an increasingly important role. In the PCB design process, the concept of Layer is particularly important throughout the PCB design process.