What is a Printed Circuit Board (PCB) used for?

A Printed Circuit Board (PCB) is primarily used for supporting and connecting electronic components. It serves as a foundational element in electronic devices, providing a physical platform where various components such as resistors, capacitors, and integrated circuits can be mounted. The board contains conductive pathways etched into the surface, allowing for electrical connections between these components.

PCBs play a crucial role in ensuring that signals and power are effectively distributed throughout electronic devices, enabling complex functionalities. Their design can vary significantly based on the complexity of the circuit and the specific needs of the device, ranging from simple single-layer boards to complex multi-layer designs used in advanced applications.

While other options touch on specific aspects of modern technology (such as web design, wireless communication, and digital storage), they do not pertain directly to the primary function of a PCB, which is fundamentally about physical and electrical connectivity for electronic components.