A method for forming a microelectromechanical resonator is disclosed. The light emission module includes a substrate, a plurality of LED chips disposed on the substrate, a fluorescent colloid and a package colloid surrounding the plurality of LED chips. When an erasing operation is carried out, the positive voltage is applied to the control gate while all the other electrodes and a semiconductor substrate are grounded. The metadata and the variable data may be formatted into a procedure which may be incorporated into a run book andor transmitted to an external machine for execution of the procedure.