HP20b - Switch between RPN and Algebraic
The Mode menu allows you to customize the calculator. To access the Mode menu, press [Shift][Mode]. Press [Up Arrow] or [Down Arrow] repeatedly to scroll through the menu starting with FIX=2 (the number of digits displayed to the right of the decimal point). Once an item is displayed, press [INPUT] key to cycle through the other options for that setting. To exit the Mode menu, press [ON/CE] key once.
Updated On: 13.09.15