User manual - Chapter 2 Manual Calculations

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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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Special Functions
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Numeric Value Stack Command Stack
#Calculations are performed according to the pri-
ority 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.