The invention relates to a device for interchanging suction pipettes which can be removed from a magazine and coupled to a fitting head of a fitting device and detached from the fitting head and deposited in the magazine. Forming the dielectric structure can include depositing hafnium oxide onto a substrate surface using precursor chemicals, followed by depositing dysprosium oxide onto the substrate using precursor chemicals, and repeating to form a thin laminate structure. If the silent signature coincides with malware signature, a user is not informed. The controller controls such that a specific image representing the electronic information specified by the information specifying unit is displayed on the display screen in accordance with the placement state specified by the state specifying unit. A variable delay has an output coupled to the enable input of the column decoder.