The present invention provides an electronic ballast for a high intensity discharge lamp such as a metal halide lamp. A first core portion extends along a portion of the axis to define a first core length. The formation area consists essentially of an epitaxial layer process chamber. The vibration damper and score keeper is preferably configured so that it displays only legitimate scores of the type of racquet sport for which it is intended. In memory-test mode, the scan cell can apply memory-test data to the memory inputs along the memory-input paths of the integrated circuit.