PCB design, PCB design, also known as circuit board called the Printed circuit board, abbreviated as PCB, so the circuit board design, also known as PCB design in English circuit board design, draw by hand from the beginning to the present, the more massive component library, and powerful features such as automatic placement and routing, more engineers to help us design the circuit board. With the rapid development of electronic technology, electronic products have become increasingly demanding, more and more features, although the increasing integration of microarrays, but still can not fully meet the demand, and therefore requires that we be able to progress PCB design to achieve a more rational, more optimized design.