PCB Design refers to the process of creating a printed circuit board, which is essential for connecting electronic components in devices. This involves laying out the electrical pathways, or traces, that allow electricity to flow between components like resistors, capacitors, and microcontrollers. The design process typically uses specialized software to ensure that the layout is efficient and meets electrical standards. Once the design is complete, it can be manufactured, allowing for the assembly of electronic devices ranging from simple gadgets to complex systems like computers and smartphones.