A printhead integrated circuit suitable for bonding to a mounting surface of an ink manifold using an adhesive is provided. A micromirror having a plurality of grooves is supported in rotation by an elastic body. Visual-light image data from each data set can be compared to determine an alignment correlation between different points of view for the visual-light data. When the guide is in a flexible state, it can conform to a curve or path defined by the steerable distal portion and the automatically controlled portion. Two ends of the headphone cable are always accessible outside the earphone receiving case.