A printed circuit board is called a PCB. This is an electronic component that will direct the movement of electricity through laminated sheets that are made of copper. When there are additional components added to the PCB, then it is called a PCA which is a printed circuit assembly. There is also the PCBA which is the printed circuit board assembly. As the PCB is used in all electronic devices today, it is necessary that it is properly created and that the right PCB testing is completed as well to insure quality control.
PCBs can be inexpensively manufactured through mass production once the design has been properly created. It is important that PCB testing is done throughout this process so that any problems with the system are worked out before any mass production takes place. Paul Eisler actually invented the PCB as far back as 1936. It is made from layers of copper and has an epoxy over it that is usually green, although can be other colors as well. There has been extensive testing of the PCBs by the US military for applications, although PCBs are also used in small electronic devices today. PCB testing is necessary for even small devices so that it can be assured that they will work properly. There are many components to PCB testing that are usually performed by PCB services.