| 摘要 |
PURPOSE: Provided is a method for displaying air pressure at a multi-meter which displays the change of real altitude by subtracting current air pressure from basic air pressure so that it raises reliability for real altitude. CONSTITUTION: The method for displaying air pressure at the multi-meter comprises the parts of: (i) using a sensor for air pressure to measure air pressure at a current location; (ii) calculating the difference between the basic air pressure and the current air pressure; (iii) terminating display when the calculated value is positive and calculating the change value of altitude in a corresponding to the negative value when the calculated value is negative; and (iv) displaying the change value of altitude.
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