Is there a STANDARD printed circuit board? How it is looks like?
There is no standard printed circuit board. Each printed circuit board has a unique function for a particular product and must be designed to perform that function in a dedicated location. PCB designers use computer-aided design systems with special software
Ceramic processors
The AMD K6 processor with aluminum cap is the most common among the ceramic processor class, although there are other ceramic processors with aluminum caps. There are also processors with copper caps, including solar ultraviolet processors. How to distinguish them? While the