An illustrative semiconductor structure described herein includes a substrate including a logic transistor region, a ferroelectric transistor region and an inputoutput transistor region. Authorized users taking medical items from storage locations are enabled to provide inputs through a display terminal to indicate the taking of medical items for patients. 1 to about 10% by weight self-dispersed ink pigment, from about 0. Each logical operator in the plurality of logical operators is assigned to an initial physical processing node in the group of physical processing nodes on a message bus. Thus, the loading condition of the cassette is released with the dustproof lid member closed under the control of the loading control mechanism, and therefore the surface of the recording medium can be effectively prevented from being stuck with dust.