Numeric keys
| 0〜9 | Enter a number. |
| . | Enter the decimal point. |
| @ | Enter the current time. Accuracy is in seconds. |
Clear keys
| C | Clear the value in the display. |
| AC | Clear the value in the display and the value registered. |
| ↩︎ | Remove the last number that have been input, or undo the previous operation. You can undo operations up to 20 steps. |
Operation keys
| ＋ | Add the values and the next. |
| − | Subtract the next value from the current value. |
| × | Multiply the value and the next. |
| ÷ | Divide the value by the next value. |
| ＝ | Calculate by the value. |
Function keys
Shift
Shift the function of the key.
| INV | Enable the functions assigned to the shift side of the function key. Enable-Disable is toggled by pressing. |
Time Unit Input
The keys to enter the time (Time Interval). You can enter a value by combination of the value of the units.
| year | Enter the value in units of year. |
| mon | Enter the value in units of month. |
| day | Enter the value in units of day. |
| hour | Enter the value in units of hour. |
| min | Enter the value in units of minute. |
| sec | Enter the value in units of second. |
| ms | Enter the value in units of millisecond. |
Unit Inverse Transformation
Convert the value in the specified units.
⇐ year |
Convert the value on the units of year. (1 year is the 365.2425 days.) |
⇐ mon |
Convert the value on the units of month. 1 month is 1/12 year（30.436875 days）. |
⇐ day |
Convert the value on the units of day. |
⇐ hour |
Convert the value on the units of hour. |
⇐ min |
Convert the value on the units of minute. |
⇐ sec |
Convert the value on the units of second. |
⇐ ms |
Convert the value on the units of millisecond. |
Date and Time Conversion
Convert the value in the time (Time Point).
| D.T | Convert the value in the format of Year, Month, Day, .(dot), Hour, Minute, Second （YYYYMMDD.HHMMSS）in the time (Time Point). If 'YYYY' is omitted, it is inferred as the date of this year. if 'YYYYMMDD' is omitted, it is inferred as today. |
CAL D.T |
Convert the value, that is regarded as the number of seconds elapsed from the reference time (1970/1/1 00:00:00 UTC) to the time (Time Point). |
Memory
Store the value temporarily.
| MR | Call the value stored in the memory. |
Min MR |
Store the value of being displayed in the memory. When you save the value of 0, the memory will be cleared. |