No other invention in the electronic field has had an impact on devices the way the cheap PCB has had. It has resulted in cheap electronic products which would otherwise be expensive if it were to be wired manually. Cheap PCBs are wired by robots, which have ultimately eliminated human input from wiring process. This provides excellent electrical properties that make the bards usable in most of our home devices.
Gone are the days when one was considered an electronic guru when they made PCBs. The Use of cheap PCBs allows for quick manufacturing or repairing of electronic devices. In the earlier days, making PCBs was not as advanced as it is now. Plating machines, exotic chemical handling machines, and photo plotters are now deployed to improve the quality. The price of tooling was obviously high, and this made the cost of doing all this prohibitive.
However, things have changed a great deal. Currently, we can carry out PCB layout using a computer and such files can be transmitted to any part of the world via the internet. Dozens of factories can produce the boards at a low cost resulting in cheap PCBs that can be used in making electronic devices especially in China. Manufacturers can now produce the boards at a low cost because all that is required is to get multiple layers plated through silkscreen and holes and results in prototypes that are professionally made. But low cost PCBs may not suit all the requirements so the choice of quality of PCBS is the right way. Usually particularly cheap things cannot necessarily guaranteed quality.