Casio SF-7990 - Manual (Page 76)

PART 5 Calculator Functions
E 74
The following conditions all result in errors.
• When the number of digits in the mantissa of an intermediate or a final result
exceeds 10 digits.
• When the number of digits in the mantissa of a value stored in memory
exceeds 10 digits. In this case, the SF Unit automatically retains the last value
stored that did not exceed 10 digits.
• Division by zero.
To clear errors
Press C to continue with the same calculation. If you want to clear the calculation
and start again, press AC .