• AC (ALL Clear)
Clear the displayed number and the state during calculation.
• C (Clear)
Clear the number you are entering. The operation during calculation is maintained.
• Exp (Exponento)
Enter a power of 10.
The number 2.5 x 103 is entered by “2.5” [Exp] “3”, and it displayed as 2.5E3.
• + / –
Reverse the sign of the displayed numerical value.
• x2
Square the displayed number.
• √x
Calculate the square root of the displayed number.
• 1/x
Calculate the reciprocal of the displayed number.
• π (Pi)
Enter the pi (3.141592653589793).
• yx
Perform exponential calculation.
Enter “2” [yx] “3” “=” for caluculate 23
• x√y
Perform exponential calculation.
Enter “8” [x√y] “3” “=” for caluculate 3√8
• x!
Calculate the factorial of the displayed number.
• log
Calculate the logarithm (base 10) of the displayed number.
• x⇔y
Swap the displayed value with the value being calculated.
“2” “+” “3” “÷” “1” [x⇔y] (displayed 5) “=” (displayed 0.2)
Change the units of angle of trigonometric functions between degrees and radians.
“R” is displayed in the indicator of the screen when the unit is in radian.
• sin, cos, tan
Calculate sin / cos / tan with the displayed value as the angle.
• sin-1, cos-1, tan-1
Calculate sin-1/cos-1/tan-1.
• Help
Display the help screen
• Setting
Display the setting screen

• History
Up to 5 history of calculation results are displayed. The higher you go, the older the history. Tap any item to enter the number
• Memory (メモリー)
The value added / entered to the memory is displayed in the context menu. Tap a number to enter that number.
• Clear Memory
Clear the contents of memory (set to 0)
• Clear History
Clear all history contents (set to 0)