Cell Phone Touch Screen

Cell Phone - This is a photograph of cell phone.
@Kool121 (292)
India
July 13, 2009 11:28am CST
How does a touch screen works? I would like to know the science behind it. Thanks.
1 response
vallepalli4319
@vallepalli4319 (331)
• India
15 Jul 09
it is a very interesting task