| 摘要 |
The present invention provides systems, devices and methods for controlling a desired output of an output device. These systems, devices and methods include connecting an electrical resistance element having a selected one of a plurality of resistance values with an electrical circuit portion having a plurality of electrical components, determining an electrical characteristic associated with the connected electrical circuit portion and the variable resistance element, and generating a control signal based on the electrical characteristic to control the desired output of the output device.
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