This invention discloses a physical quantity distribution sensor comprising a plurality of unit cells. Each such unit cell includes an information storage region responsive to a physical stimulus and capable of a transition from a first electrical potential state to a second electrical potential state according to the physical stimulus, a driving element for providing at an output portion thereof an electrical potential according to the electrical potential state of the information storage region, and a switching element by means of which the unit cell is selected. The physical quantity distribution sensor further includes an output adjustment section capable of adjusting the first electrical potential state of the information storage region in order that the output of the selected driving element may substantially equal a reference electrical potential at the time when the switching element is in the conductive state.