What level of patent does the invention of computer belong to?

Patents are not graded, but articles invented are graded, that is, the degree of innovation of the original system or product. According to TRIZ theory, in fact, computers are not achieved in one step, but are made up of tiny innovations. Insist that the initial level of computer invention should be the fifth level. At that time, some circuit characteristics in the circuit (such as the unilateral conductivity of the original) were used to construct it.