NEC N331i - Accessory; Calculator Key Assignment; Activating the Calculator

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Accessory
Calculator
You can perform addition, subtraction, multiplication and division with the calculator function. It also has a memory function. The calculator can display
a result of up to 9 digits.
If a calculation results in a number exceeding the maximum, the screen displays error in the calculation field.
Calculator Key Assignment
For calculator function, the keys are assigned different functions. The following shows the key assignment:
2
The calculator can display a result of up to 9 digits. If a calculation results in a number greater than the above maximum, the screen displays error.
Activating the Calculator
☛
With the standby screen displayed, press 8 and 1 to display the Calculator.
key: Addition (+)
key: Subtraction (–)
▲ key: Multiplication (×)
▼ key: Division (÷)
key: Square Root (√)
key: Percent (%)
key: Inversion
Softkey 1: Memory Recall (2
nd
)/Memory Cancel
Softkey 2: Memory Addition (2
nd
)/Memory Store
key: Equals to (=)
CLR key: Delete digit
(Held) All clear
key: Exit calculator
key: Sign inversion (±)
key: Decimal Point (.)
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