According to the present invention, there is provided a method and system for providing brake control, autobrake and antiskid brake functionality by recognizing that the only difference between the three functions is the amount of deceleration they allow. In another example, a highly efficient optical detector is achievable through the combination of indirect and direct bandgap semiconductors. Thus the ground fault detector can adequately detect the ground fault in conformity to the capacitance of the common mode capacitor. A ratchet allows sequential advancement of a cutting member toward a tubular shaped jaw that holds the item to be cut. The deformable mirror elements is flexed about an axis parallel to a long dimension of the ribbons to vary a curvature of at least one of the reflective ribbons.