A unified system of programming communication. The light emitting device package includes a semiconductor light emitting device, a first encapsulant over the semiconductor light emitting device, and a second encapsulant having a refractive index greater than a refractive index of the first encapsulant over the first encapsulant. The mode detector then applies delay values to delay circuits that couple the signals to the signal lines with respective delays corresponding to the delay values. The sporadic teeth keep the hair in place while the trimmers cut the hair following the edge guide provided on the comb.