Some cellular phones double
as miniature PCs. Because these phones
offer advanced features not typically found in cellular phones, they are sometimes called smart phones.
Fig. 1: Smart Phone
These features can include Web and e-mail access, special software such as
personal organizers, or special hardware
such as digital cameras or music players.
Some models even break in half to reveal a
In ATM and in latest smart phones, touch screen is used to receive input from the user. The user enters
data by the touch of his finger on different menu options or icons present on touch screen.