Printed Circuit Boards (PCBs) are essential in electronics, allowing for neat placement of electronic components without long soldering lines. Copper conductive layers connect components, and customized PCBs can be created with software. Specific tests, such as In-Circuit Testing (ICT) and Flying Probe Testing, ensure the PCB’s proper functioning. Other testing methods include Functional Circuit Testing, Automated Optical Testing, Boundary Scan, X-Ray Inspection, and Burn-in testing. Each method has its pros and cons for determining faults in PCBs.