A method of fabricating a flash memory cell. An adjustment assembly receives slack adjustment input from a push rod and is configured to automatically rotate the worm shaft when brake slack exceeds a predetermined limit. The pointer has a baffle in the recess to block a light from a light emitter to a light receiver and a pendulum end to sense the presence of paper. One embodiment, working in a CIELAB color space includes the use of a three dimensional histogram for detecting predominant colors having the same luminance. The MTJ core is configured to produce an electrical output signal which varies as a function of the pressure.