HP 300s Scientific Calculator - Manual (Page 11)

5
About the Display
Your calculator has a 31-dot ✕ 96-dot LCD screen.
Example:
Input expression
Calculation result
Display Indicators
Important: For very complex calculations or other
calculations that take a long time to execute, the display may
show only the above indicators (without any value) while
performing the calculation internally.
Sample Display: STAT D
Indicator: Means this:
S
The keypad has been shifted by pressing the 
key. The keypad will unshift and this indicator will
disappear when you press a key.
A
The alpha input mode has been entered by pressing
the
 key. The alpha input mode will be exited and
this indicator will disappear when you press a key.
M There is a value stored in independent memory.
STO
The calculator is standing by for input of a variable
name to assign a value to a variable. This indicator
appears after you press
  (STO)
RCL
The calculator is standing by for input of a variable
name to recall the variable’s value. This indicator
appears after you press
 .
STAT The calculator is in the STAT Mode.
D The default angle is degrees.
R The default angle is radians.
G The default angle is grads.
FIX A fixed number of decimal places is in effect.
SCI A fixed number of significant digit is in effect.
Math Math style is selected as the input/output format.

Calculation history memory data is available and
can be replayed, or there is more data above/below
the current screen.
Disp The display currently shows an intermediate
result of a multi-statement calculation.