The schematic diagram only indicates the electrical connection relationship between components, and does not represent the actual connection. Therefore, we need to layout these connection relationships in the actual PCB board. That is to say, when drawing the schematic diagram, you do not have to consider the layout, wiring, EMC and other various issues, as long as the components and components are connected.
The figure below is the PCB drawing designed according to the schematic diagram, which is PCB layout.
