全书共19 章，主要内容包括：原理图设计，元件库制作，PCB 元件的布局、布线，Gerber 及相关生产文件输出的设计流程，PADS 高级功能应用，多层印制电路板的设计原则与方法(The book consists of 19 chapters, including schematic design, component library production, layout and wiring of PCB components, design process of Gerber and re