Casio SERIES FX-9860G - Manual (Page 80)

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k Stacks
The unit employs memory blocks, called stacks, for storage of low priority values and
commands. There is a 10-level numeric value stack, a 26-level command stack, and a
10-level program subroutine stack. An error occurs if you perform a calculation so complex
that it exceeds the capacity of available numeric value stack or command stack space, or if
execution of a program subroutine exceeds the capacity of the subroutine stack.
Example
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Numeric Value Stack Command Stack
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Numeric Value Stack Command Stack
2-2-7
Special Functions
# Calculations are performed according to
the priority sequence. Once a calculation is
executed, it is cleared from the stack.
# Storing a complex number takes up two numeric
value stack levels.
# Storing a two-byte function takes up two
command stack levels.