An article of footwear has an upper that includes a knitted component and a sole structure secured to the upper. A JFET or n-channel MOS transistor is coupled between an IO pad, and a transistor and diode, wherein the JFET or n-channel MOS transistor limits the current flowing through the diode and transistor to prevent the integrated circuit device from heating up and catching on fire or smoke during the smoke test. The controller is capable of regulating the input signal and the one or more stages to generate an output signal. An advantage of this approach is elimination of the work required to extract the line parameters in the transformed domain. The system may process the user’s word or utterances and assign language preferences to the user based on the user provided information.