To provide a photoelectric conversion device with low noise at low cost. The execution unit also comprises further circuitry which receives the intermediate signal and operates on it to produce a final signal. A cascode current source unit includes a plurality of cascode current sources connected in parallel. Antifuse programming is completed by applying the programming voltage to the programming pad of the antifuse. The light supplying unit is disposed between the first and second display units, and provide the first and second display units with light generated from a lamp by dividing the light, to thereby regulate a contrast ratio of a luminance between the first and second display units.