The touch screen is one of the easiest computer interfaces to use. It allows users to navigate systems by touching icons or links on the screen. Touch screens are composed of a touch sensor, controller, and software driver. The sensor sits over a display and detects touches, the controller translates this to computer instructions, and the driver allows the touch screen and computer to work together. Touch screens are used in many applications like POS systems, phones, tablets, and more. Tablet computers are primarily operated through a large touch screen with an onscreen keyboard and can be used with detachable or integrated keyboards.

2. The touch screen is one of the easiest to use
and most intuitive of all PC interfaces, making it
the interface of choice for a wide variety of
applications. A touch interface allows users to
navigate a computer system by touching icons
or links on the screen.

3. Touch screen systems are being used in a
variety of applications, including point-of-sale
systems, public information displays, industrial
control systems, and more.

4. A basic touch screen has three main
components:
1. Touch sensor
2. Controller
3. Software driver
The touch screen is an input device, so it
needs to be combined with a display and a PC
or other device to make a complete touch input
system.

5. A touch screen sensor is a clear glass panel
with a touch responsive surface. The touch
sensor/panel is placed over a display screen so
that the responsive area of the panel covers
the viewable area of the video screen.

6. The controller is a small PC card that connects
between the touch sensor and the PC. It takes
information from the touch sensor and
translates it into information that PC can
understand

7. The touch screen to work with existing
software and allows new applications to be
developed without the need for touch screen
specific programming. The driver is a software
update for the PC system that allows the touch
screen and computer to work together.

9. 1. Resistive touch screen technology
2. Capacitive touch screen
3. Surface acoustic wave technology
4. Infrared touch screen:

10. 1. ATM machine
2. Mobile phone
3. Tablet PC’s
4. Gaming console
5. Public Information Displays
6. Retail and Restaurant Systems
7. Customer Self-Service
8. Control and Automation Systems
9. Computer Based Training
10. Assistive Technology

12. A tablet computer, or simply tablet, is a one-
piece mobile computer, primarily operated
by touch screen (the user's finger essentially
functions as the mouse and cursor, removing
the need for the physical (i.e., mouse and
keyboard) hardware components necessary for
a desktop or laptop computer; and an
onscreen, hide able virtual keyboard is
integrated into the display). Available in a
variety of sizes, even the smallest touch
screens are much larger than those of a smart
phone or personal digital assistant.

13. A tablet computer may be connected to a
keyboard with a wireless link or a USB port.
Convertible notebook computers have an
integrated keyboard that can be hidden by
a swivel joint or slide joint, exposing only the
screen for touch operation. Hybrids have a
detachable keyboard so that the touch screen
can be used as a stand-alone
tablet. Booklets include dual-touch screens,
and can be used as a notebook by displaying a
virtual keyboard in one of them.