Update README.md

Author: JLJu

README.md

@@ -2,7 +2,7 @@
 ![Asgard ADC](http://www.basicairdata.eu/wp-content/uploads/sites/1/nggallery/adc-asgard-build-2/IMGP5610.JPG)
 
 ## Description
-An air data computer (ADC) is an essential avionics component found in modern cockpits. This unit can determine calibrated Airspeed, Mach number, Altitude, and common air properties from a pitot-static probe data.
+An air data computer (ADC) is an essential avionics component found in modern cockpits. This unit can determine True Airspeed, Mach number, Altitude, and common air properties from a pitot-static probe data.
 
 This repository, together with some material published on the BasicAirData website, contains the information to build from scratch a recreational grade DIY Air Data Computer. This device can transmit data via USB serial port and Bluetooth, and log all data on a MicroSD.