The invention provides a semiconductor device where data can be written after the production and forgery caused by rewriting of data can be prevented, and which can be manufactured at a low cost using a simple structure and an inexpensive material. The second, separatorclassifier unit employs air or vacuum transport to convey, separate and classify the final bud product from the minor stem, leaves and minor debris and to exhaust and remove the hazardous dust and organic particulates. However, internal dimensions of IDTs are inversely proportional to operating frequency, such that high frequency IDTs present significant manufacturing difficulties.