| mode | switch from radians to degrees and back when using circular trigonometric functions |
| A/m | A length, in register x, expressed in units of m (meters) is converted into angstr&oulm;ms |
| m/A | A length, in register x, expressed in units of angstr&oulm;ms is converted into meters |
| eV/J | An energy, in register x, expressed in units of J (joules) is converted into electron-volts |
| J/eV | An energy, in register x, given in units of electron-volts is converted into SI joules |
| cal/J | An energy, in register x, expressed in units of J (joules) is converted into calories |
| J/cal | An energy, in register x, given in units of calories is converted into SI joules |
| d | Specifies that the number just entered is expressed in degree, and make the appropriate conversion according to the mode selected (deg or rad) |
| m | Specifies that the number just entered is expressed in minutes, and make the appropriate conversion according to the mode selected (deg or rad) |
| s | Specifies that the number just entered is expressed in seconds, and make the appropriate conversion according to the mode selected (deg or rad) |