BITalino records analog signals which need to be converted into digital signals.
The analog-to-digital conversion results in the digital values ranging from 0 to 1023. The upper limit of this range is defined by 2n-1 where n corresponds to BITalino’s sampling resolution (10-bit).
You can find the transfer function to convert each sensor’s digital value back into its original physical unit in the sensor’s datasheet (see also BITalino Datasheets).