The piezoresistive pressure sensor operates by detecting even the slightest changes in environmental pressure. When pressure is applied, the sensor’s thin‑film membrane flexes, causing the piezoresistive material deposited on the film to deform simultaneously. This deformation results in a measurable change in electrical resistance. The resistance variation is then captured through a Wheatstone bridge circuit and amplified to produce a stable, accurate output signal. By processing this signal, the system can precisely determine the magnitude of the applied pressure, ensuring reliable and consistent pressure measurement across a wide range of applications.