Enter (blank) dup X
+ − * / arithmetic
^ Xʸ
^2 X²
I 1/X
SQR √X
EXP eˣ
LN ln X
LOG log₁₀ X
T 10ˣ
% Y percent of X
SIN COS TAN trig
ASIN ACOS ATAN inverse trig
DEG / RAD angle mode
FP / IP frac / int part
S swap X↔Y
D drop X
RD / RU roll stack down/up
C clear stack
L show stack
PI / E push π / e
! store X → memory
@ recall memory → X
n! store n → memory
FIX / STD set / clear fixed digits
n F fixed display, n digits
n S set Y register to n
n+ n− n* n/ n^ append operator to n to save a step
Q reset calculator