SIGMA, JURNAL SAINS DAN TEKNOLOGI, Vol. 13, No. 1 Januari 2010, ABSTRAK : Measurement mostly required a precision, accurary, and sensitivity.Measurement by using the analog altimeter often shows that the obtained data are inaccurate, because lot of error factor influencing the meansurement. To reduce the error factor, the altimeter is made digitally. Digital altimer based on microcontroller AT8…