Abstract: Systems (1) comprising generating devices (2) comprising sensors (21) for generating sensor signals representing orientations of the generating devices (2) are provided with comparing devices (3) comprising comparators (31) for comparing the sensor signals with reference signals for interpreting the orientations, to increase the number of possible applications. The generating devices (2) and the comparing devices (3) may form parts of one apparatus (4) or of different apparatuses and then communicate wiredly or wirelessly via radio or infrared. Reference sensors (33,52) for generating the reference signals and/or reference memories (34,53) for storing the reference signals may be located in the comparing devices (3) and/or in sources (5) and then communicate wiredly or wirelessly via radio or infrared. Further comparators (36) in the comparing devices (3) may introduce adjustable sensitivities.

Abstract: The present invention provides an array (20) og magnetoresistive memory elements (10). The array (20) comprises: means for applying a current or voltage for generating a programming magnetic field at a selected magnetoresistive memory element (10s), a magnetic field sensor unit (50) for measuring an external magnetic field in the vicinity of the selected magnetoresistive memory element (10s), and means (52) for tuning the current or voltage for compensating locally for the measured external magnetic field during a programming operation. The present invention also provides a corresponding method.