1、Nippon Decimal Classification, NDC
2、Decimal symbol:~~Tap a symbol to indicate decimal values.
3、BCDD (Binary-Coded Decimal Digit)
4、Decrease Decimal Button\\015\\015Displays one less decimal place each time you click the button.
5、Increase Decimal Button\\015\\015Displays an additional decimal place each time you click the button.
6、Decimal number with exponent notation are not allowed.
