A tool for self-defense and safety includes a body defining a canister compartment and a flashlight compartment. The image is processed using machine vision techniques to find shapes and objects in the image. In addition, the steam turbine has a live-steam bypass, which, feeds live steam as bypass steam into the high-pressure region of the steam turbine through at least one bypass line and through a bypass feed assigned to each bypass line, but after the first turbine moving-blade row, as viewed downstream of the steam-turbine inlet region. Movement speed of the objective lens is detected during focus jump, a corresponding lens drive signal is generated, and an end position is determined from behavior of the error signal immediately before the end of the jump. Because the plural sense amplifiers are allocated to the same bit lines, and these are operated in parallel in this way, data can be read at a high speed. A recess is provided in the first plate so as to have a gap between the first plate and the end surface of the semiconductor stacking unit.