Disclosed herein is a medicine management system wherein a camera is installed in a camera tube to acquire a good-quality medicine image, thereby improving recognition efficiency. 5 eV or higher is used for a DRAM, so that a retention period of potentials in a capacitor can be extended. Each element of the m-dimensional signature vector is calculated based on a summation of a plurality of terms. Ventilation openings in the protector plate induce inflow which reduces the discharge velocity, limits the formation of an adverse pressure gradient and encourages circumferential distribution. The method includes applying a selective electromagnetic irradiation to the semiconductor layer to heat that layer to a temperature lower than its temperature of fusion to cure defects without causing an increase in the temperature of the receiver substrate beyond 500\xb0 C.