Device for measuring altitude and barometric pressure

An altitude and barometric pressure measuring device, comprising:

• a barometric pressure sensor including an amplifier for outputting an amplified analog signal from said sensor corresponding to the sensed atmospheric pressure;
• an analog to digital converter for converting the amplified analog signal to a digital output signal;
• a barometric pressure information generating means for outputting, when operated, data corresponding to atmospheric pressure in accordance with said digital output signal of the converter;
• an altitude information generating means for outputting when operated, data corresponding to the altitude of the device in accordance with said digital output signal of the converter;
• mode designating means for selectively operating the barometric pressure information generating means in a pressure measuring mode for outputting the data corresponding to atmospheric pressure, or the altitude information generating means in an altitude measuring mode for outputting the data corresponding to the altitude of the device;
• and
• display means responsive to the output data for displaying selectively information indicative of the operation of said barometric pressure information generating means or said altitude information generating means.