powerOne Infinity Softworks Operating Instructions

powerOne™ 25 Infinity Softworks
Appendix
Note that the Graffiti shift indicator is in the view window both on
the main and input screens. Also, certain characters are not
allowed. These keystrokes and their accompanying shift indicator
are ignored. For instance, capital letters are not supported so the
Graffiti shift indicator for shift or caps lock is not displayed.
Error Cases
Error messages appear when calculations cannot be successfully
completed. This section documents the cases where error
messages occur:
Mathematical Errors
• Overflow or underflow occurs in the calculation.
• Divide by 0.
• Reciprocal when x = 0.
• Square root when x < 0.
• Power when y = 0 and x <= 0 or y < 0 and x is not an integer.
Calendar
• Calculating a date when difference is greater than allowed
reports the maximum date or the same date.
• General math errors.
Markup/Discount
• Calculating percent when cost = 0.
• Calculating new price when percent is –100.