If the problem is that the PDA isn't tracking the stylus properly, you may be able to recalibrate the screen using a built-in utility; for PalmOS PDAs, this involves using the Digitizer preference panel. If there is physical damage to the screen, such as broken glass, you must replace the screen. The details vary depending on the make & model of PDA, but it's usually not something the average user should attempt without some knowledge in working with electronic hardware.
It is...Seeing that everything can be manipulate to ones advantage.
In order to unlock the touch screen of a PDA you will need to refer to the user manual that came with the PDA. Unlocking the screen is different for each PDA and there is no standard way to do so.
yes it is fixable
there is no way to fix it you have to buy a new one sorry.
You cannot fix a physically broken screen via the graphics card. Take the computer to a repair shop and pay for a new screen to be installed.
If the black marks are dead pixels then you have to replace the screen you cant fix it.
For scales it is easest to replace the screen.
Buy a new PDA or take it to the phone company.
It varies. They hardly ever exceed 3 in. by 6 in.
push the pda up
http://www.instructables.com/id/Replace-the-top-screen-of-a-Nintendo-DS-without-o/
buy a new caulculator they just cost 1 dollar, but to fix it 20 dolars