IZ1229M
FUNCTIONAL DESCRIPTION
Decimal point system
Complete floating decimal point system.
Integral number
10 digits leading zero suppression. Zero shift.
Symbols
- : negative number display
E : error display
, : punctuation comma
: touch tone indicator
Error detections
• System errors occur when:
1) The division by zero.
2) The extraction of square root of a negative number.
3) The integral part of any memory calculation result exceeds 10 digits.
• Rough estimate calculation error occur when
The integral part of any calculation – any standard functions, percentage, square root,
reciprocal or power calculations result exceeds 10 digits.
Error indication
• System error
“0” is indicated in the 1-digit position and “E” in the sign-digit position.
• Rough estimate calculation error
The high-order 10-digit calculation result is indicated together with “E”.
The decimal point is indicated if the position corresponding to a calculation result of time 10-10,
and no zero shift is performed
Error release
• System error
A system error can be release by the ON/C key.
• Rough estimate calculation error
ON/C key can release a rough estimate-calculation error and clear calculation result at once. CE
key can release only a rough estimate calculation error (“E” flag).
Number entry
Numericals can be entered up to 10 digits. Numerical entries equal to 11 digits or more are
ignored.
Memory protection
In any error detection, the memory contents present before the error detection are protected.
Memory indication
3
