DEC

This operation puts the calculator in decimal mode. Integer values are displayed in base 10. The integer 100 decimal will be shown as "# 100d". The "#" at the start indicates that the number is an integer and the trailing "d" indicates the number is displayed in decimal mode.

When entering integers, the final character normally indicates what base to use when reading that value. The characters are d for decimal, h for hexadecimal, o for octal and b for binary. Omitting that character in decimal mode will result in the calculator assuming the value should be interpreted as a decimal value.