A semiconductor integrated circuit capable of protection from card hacking, by which erroneous actions are actively induced by irradiation with light and protected secret information is illegitimately acquired, is to be provided. Enhanced entertainment activities are presented to the child when the child reaches a certain proficiency in executing educational activities presented when the removable unit and the base unit operate together. The lamellae are arranged in such a way that each lamella is brought under the first folding section and over a second neighboring folding section and can be driven by the motion of the driving element from the covered position of the first folding section over the second neighbouring folding section.