A method for the transformation of information relating to at least one position on a globe from a first global coordinates system into a second local coordinates system, where the position in the first global coordinates system is provided by information relating to the longitude and a latitude, and the position in the second local coordinates system is provided in terms of two axes arranged orthogonally to one another. The method includes receiving a signal containing information relating to the position by means of an antenna, determining a first distance (x) between the position and a reference longitude for the first local axis using a calculation unit, and determining a second distance (y) between the position and a reference latitude for the second local axis by means of the calculation unit. The reference longitude is selected in such a way that it is near to the position.

An electrical assembly is provided for selectively operating a household appliance in a demonstration mode or a standard mode. A logic unit (2) is adapted to control the electrical and/or electronic components of the household appliance (1), and to make the household appliance (1) perform a standard mode or a demonstration mode. A power supply device (5), external to the household appliance (1), is adapted to deliver electric power to the household appliance (1). The household appliance (1) comprises a power supply circuit (3) adapted to be connected to the power supply device (5) or directly to the supply mains (4), in order to energize the logic unit (2) and the other electrical and/or electronic components of the household appliance (1). The household appliance (1) further comprises a detection device (9) adapted to detect if the power supply circuit (3) is connected to the power supply device (5) or directly to the supply mains (4). The logic unit (2) is configured to enable the performing of the demonstration mode if the detection device (9) detects that the power supply circuit (3) is connected to the power supply device (5), and to enable the performing of the standard mode if the detection device (9) detects that the power supply circuit (3) is connected directly to the supply mains (4).