A Printed Circuit Board (PCB) is a flat, rigid board made from insulating materials like fiberglass, layered with thin copper traces. These traces form circuits that connect and support electronic components such as chips, resistors, and capacitors. PCBs are essential in almost all modern electronic devices, from smartphones and computers to household appliances and industrial equipment. By organizing and securing components in a compact layout, PCBs enable reliable and efficient electronic functionality. Their design allows for mass production and consistent performance, making them a fundamental building block of today’s technology.