An information processing system including multiple apparatuses capable of executing one or more applications and an information processor connected to the apparatuses through a first network is disclosed. The capacitor is configured by a pressure detecting chip that includes a first electrode and a second electrode disposed opposite to the first electrode with a predetermined distance defined therebetween to have capacitance Cv formed between the first electrode and the second electrode. The matrix material provides high H2 permeability, which permits fast permeation of H2 gas. By using the converter and driver transistor and a driver transistor when supplying electric current to a light emitting element during light emission, dispersion in the transistor characteristics can be made to have less influence on brightness than when using a structure in which write-in operations and light emission operations are performed using different transistors.