Techniques for high temperature ultra-low ripple multi-stage LED driver circuit together with LED control circuits are disclosed. In one embodiment, freeform inputs are handwritten annotations on paper that are scanned into a computer system. The transmitting unit modulates and upconverts a transmit baseband information signal to generate a CDMA transmit RF information signal and a GSM transmit RF information signal. The dispensing closure can be manufactured using typical injection-molding techniques, and may be adapted for use with dispensing mechanisms and attachment means known in the personal care products industry.