Casio FX-9750G PLUS User's Manual & Technical Reference page 46

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Before Starting Calculations...
k k k k 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.
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k k k k k Input, Output and Operation Limitations
The allowable range for both input and output values is 10 digits for the mantissa
and 2 digits for the exponent. Internally, however, the unit performs calculations
using 15 digits for the mantissa and 2 digits for the exponent.
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Example
Numeric Value Stack
• 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.
÷
3 × 10
Example
5
AdEf/hw
dEf/h-
ecifhw
2
1
3
2
4
3
5
4
4
5
7 – 42857 =
Command Stack
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h