To Clear An Error; About Calculation Errors - Casio PV-250X User Manual

About calculation errors

An error indicator appears on the display and further calculation becomes
impossible whenever an error occurs.
Error indicator
Any of the following conditions produces an error.
• Whenever the number of digits in the mantissa of an intermediate or
final result exceeds 12
• Whenever the number of digits in the mantissa of a value in calculator
memory exceeds 12 digits. In this case, the PV Unit automatically retains
the last value stored that did not exceed 12 digits.
• Division by zero
• Attempting to calculate the square root of a negative value

To clear an error

Tap C to clear an error and continue with the same calculation from the
point immediately before the error occurred.
To clear the entire calculation and start again, tap AC.
Chapter 9 Pop Up Tools
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