How would you break down electronic circuits?

In the early 1800's, the Danish curator and archaeologist Christian Jurgensen Thomsen hit on a novel idea for classifying prehistory artifacts. By dividing them into three categories -Stone Age, Bronze Age, and Iron age -he was able to make some sense of his museum's collection and shed light on... show more In the early 1800's, the Danish curator and archaeologist Christian Jurgensen Thomsen hit on a novel idea for classifying prehistory artifacts. By dividing them into three categories -Stone Age, Bronze Age, and Iron age -he was able to make some sense of his museum's collection and shed light on civilizations long vanished.


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I understand the applications are infinite, but how would you go about classifying electronic circuits?

(Application)

Thanks!
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