Compensated semiconductor pressure sensors such asthe MPX2000 family are relatively easy to interface with digitalsystems. With these sensors and the circuitry describedherein, pressure is translated into a 0.5 to 4.5 volt output rangethat is directly compatible with Microcomputer A/D inputs. The0.5 to 4.5 volt range also facilitates interface with an LM3914,making Bar Graph Pressure Gauges relatively simple.
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