There are more practical reasons why the most appropriate deflection system is used in TV CRT or PC monitors. This applies to both the deflecting coils as well as to the necessary electronics. Such a system enables not only “static” deflection of the beam for the positioning purposes mentioned above, but also precise and fast dynamic control of the beam spot position by a computer. This makes it possible, e.g.: to weld joints of complicated geometry, and to create image-enlarged pictures of objects in the working chamber on TV or PC monitors.