A packaged integrated circuit device includes a nonvolatile memory device and a programmable clock driver circuit therein. The permanent magnet is mounted in a number of one or in a plural number in the iron core in a manner that at least the outer peripheral surfaces thereof are surrounded by the iron core. The communications may include electrical, light, radio frequency, or the like. A second key is derived based on the first digital signature, and a second digital signature is obtained from the license. A method is also provided that includes generating a control signal within a wearable wire feeder and driving a welding wire within the wearable wire feeder in response to the control signal.