An apparatus, system, and method for measuring parameters, measuring or determining capacitance, producing a digital output that is dependent upon a capacitance, or converting a variable capacitance output, of a sensor capacitor for example, into a digital format. By activating and deactivating pins, a microprocessor may form various circuits, for instance, each containing a resistor and a different capacitor and, in some embodiments, without the use of intermediate switching components. The mic...