A redundant sense amplifier is provided together with a corresponding bit line, which is connected to all word lines in the memory array. The brace includes a distal pad hingedly coupled to a distal end portion of the brace. The index assists by correlating previous model queries on the data model and associated response to those previous model queries. A calibration generator switched into the input port serves as a reference for quantifying and removing hardware errors. Reinforcement insulating films are formed in a dielectric material of a larger elastic modulus than that of a formation material of the low dielectric constant films and are arranged to overlap with the wirings when viewed perpendicularly to a substrate surface.