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10
Calculation Stacks
This calculator uses memory areas, called "stacks", to
temporarily store numeric value (numbers) and
commands (+ – x ...) according to their precedence
during calculations.
The numeric stack has 10 levels and the command stack
has 24 levels. A stack error [Stack ERROR] occurs
whenever you try to perform a calculation that exceeds
the capacity of stacks.
Calculations are performed in sequence according to
"Order of Operations". After the calculation is performed,
the stored stack values will be released.
Error Messages and Error Locator
The calculator is locked up while an error message is
shown on the display to indicate the cause of the error.
Press will clear the error, remove all replay
memory and return to initial display of the latest mode.
Press will clear the error message and return to
the display of the latest mode.
Press or to display the calculation with the
cursor positioned under the error and you can correct
it accordingly.
Error Message
Cause Action
Math
ERROR
• Calculation result is
outside the allowable
calculation range
• An attempt to perform
a calculation using a
value that exceeds the
allowable input range.
• An attempt to perform
an illogical operation
(division by zero, etc.)
Check your input
values and make
sure they are all
within the allowable
ranges. Pay special
attention to values in
any memory areas
you are using.
Stack
ERROR
The capacity of the
numeric stack or
operator stack is
exceeded.
Simplify the
calculation. The
numeric stack has 10
levels and the
operator stack has
24 levels.
Divide your
calculation into two
or more separate
parts.
Syntax
ERROR
An attempt to perform
an illegal mathematical
operation.
Press or to
display the
calculation with the
cursor located at the
location of the error
and make required
corrections.