Calibration features are provided by both of them. This is to ensure that when you input Q, W will not appear instead. The process it fairly simple too. Just follow the on screen instructions, tap a few keys and you can start using these babies. The keyboard layout is quite sophisticated in design, keys are divided into two portions.
Press shift once to input top column characters and press twice to have uppercase characters.
Caps lock and Number lock are also available to ease text input. Besides that you can also jump between fields by pressing a combination of buttons. Shift me over to Mars Graffiti, Spacebar and function conveniently located. Simultaneous application of pressure to these buttons will result in self-detonation. If you are really lost, you can always call up the Graffiti area.