HP 35s User Manual page 26

To select ALG mode:
9{
Press
is in ALG mode, the ALG annunciator is on.
Example:
Suppose you want to calculate 1 + 2 = 3.
In RPN mode, you enter the first number, press the
number, and finally press the arithmetic operator key:
In ALG mode, you enter the first number, press

finally press the
In ALG mode, the results and the calculations are displayed. In RPN mode, only the
results are displayed, not the calculations.
Note You can choose either ALG (Algebraic) or RPN (Reverse Polish
Notation) mode for your calculations. Throughout the manual, the
"
mode must be performed differently in ALG mode. Appendix C
explains how to use your calculator in ALG mode.
1-10
Getting Started
() to set the calculator to ALG mode. When the calculator
key.
RPN mode
 
1 2
" in the margin indicates that the examples or keystrokes in RPN
v

key, enter the second

.

, enter the second number, and
ALG mode
 
1 2