HP 35s Scientific Calculator - Manual (Page 29)

Getting Started 1-13
HP 35s Annunciators
Annunciator Meaning Chapter
 The "  (Busy)" annunciator appears while
an operation, equation, or program is
executing.
When in Fraction–display mode (press

 ), only one of the " " or " " halves
of the " "' annunciator will be turned on
to indicate whether the displayed numerator
is slightly less than or slightly greater than its
true value. If neither part of "
" is on, the
exact value of the fraction is being
displayed.
5
Left shift is active. 1

Right shift is active. 1
RPN Reverse Polish Notation mode is active. 1, 2
ALG Algebraic mode is active. 1, C
PRGM Program–entry is active. 13
EQN Equation–entry mode is active, or the
calculator is evaluating an expression or
executing an equation. 6
0 1 2 3 4 Indicates which flags are set (flags 5
through 11 have no annunciator). 14
RAD or GRAD Radians or Grad angular mode is set. DEG
mode (default) has no annunciator. 4
HEX OCT BIN Indicates the active number base. DEC
(base 10, default) has no annunciator. 11
HYP Hyperbolic function is active. 4, C