A sensor stores readings as 8-bit unsigned integers. How many distinct values can one reading take? Set the slider to your answer.

256 (answers within ±7.68 count)

$2^{8} = 256$ values (0–255). Every representation budget works this way: n bits → $2^{n}$ patterns. It is why 8-bit images have 256 gray levels and why your lab ADC clips at its bit depth.