A semiconductor device includes a semiconductor substrate, source and drain regions on the semiconductor substrate, and contact plugs connected to the source and drain regions. The leak detection feature facilitates the monitoring of fluid leaks at the interface of two adjoining conduit flange fittings. Otherwise, in regard to the development processing controller, when the recording data developed by the decode circuit is stored in the line buffer, it is stored from a first byte in a state where a 0-th byte of the line buffer is vacant. The additional information of the second data is coded in accordance with a first error correction method, and the coded additional information and the address information are recorded in a state coded in accordance with a second error correction method.