An electro-optical device includes: a plurality of unit circuits arranged corresponding to crossings between a plurality of scanning lines and a plurality of data lines; a plurality of wirings that constitutes each of the plurality of scanning lines; a scanning line drive circuit that sequentially selects one of the scanning lines while sequentially selecting one of the wirings included in the scanning line, at every driving period within each unit circuit; and a data line drive circuit that, at every period within the each unit period which is a writing period before the drive period is started, outputs a data potential in response to the gradation data of the unit circuit, which corresponds to the wiring selected in the driving period within the unit period, to a data line corresponding to the unit circuit out of the each data line. Each of the plurality of unit circuits includes: an electric optical element that displays gradation in response to the data potential; a capacitative element having a first electrode connected to a capacitance line and a second electrode connected to the data line; and a switching element that is disposed between the second electrode and the electric optical element and, by being electrically conducted in selecting one of the wirings by the scanning line drive circuit, allows the second electrode and the electric optical element to be electrically conducted.