Touchscreens allow direct interaction with displays through touch. They contain a touch sensor panel, controller, and driver software. Touching the sensor causes a voltage change detected by the controller. Main types are resistive, capacitive, surface acoustic wave, and infrared. Applications include public displays, self-service kiosks, and devices. Advantages are direct selection and not needing keyboards, while disadvantages include lower precision with fingers and needing to be close to the screen. Touchscreens are widely used due to being user-friendly and replacing mouse and keyboard.

1. By
B.Rajendra
Y.Kirankumar

2. 
IntroductionIntroduction

How does work TouchscreenHow does work Touchscreen

Why use Touch ScreenWhy use Touch Screen

Touch Screen TypesTouch Screen Types

Applications of Touch ScreensApplications of Touch Screens

AdvantagesAdvantages

DisadvantagesDisadvantages
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ConclusionConclusion

3. A touch screen is computer display screen.
Touch screen is sensitive to human touch.
The display screen has a sensitive glass overlay placed
on it and we give the desired input.
A touch screen kit includes a touch screen panel,a
controller and a software driver.

6. A touch screen sensor is a clear glass panel with a
touch responsive surface
The sensor generally has an electrical current or
signal Touching the screen causes a voltage or signal
change.

7. The controller is a small PC card that connects between
the touch sensor and the PC
The controller determines what type of
interface/connection you will need on the PC

8. The driver is a software that allows the touch
screen and computer to work together
Most touch screen drivers today are a mouse­
emulation type driver.

9. Diagram showing How it Works

10. WHY USE TOUCH SCREEN
Eliminate operator errors because users make selections
from clearly defined menus.
Provide fast access to all types of digital content.
Eliminate keyboards and mice, which many novice
users find difficult to use

11. * Resistive Touch Screen
* Capacitive Touch Screen
* Surface Acoustic Wave
Touchscreen
* Infrared Touch Screen
Types of Touch Screen
Technologies:

12. Resistive Touch Screen

13. Capacitive Touch Screen

14. Surface Acoustic Wave Touchscreen

15. Infrared Touch Screen

16. Public Information Displays:
Tourism displays, Trade show display
Customer Self­Services:
Stores, Restaurants, ATM, Airline ticket terminals
and Transportation hubs.
More uses.
Digital jukeboxes, Computerized gaming, Student
Registration systems, Multimedia software ,
Scientific applications etc.

17. Direct pointing to
the objects.
Fast
Finger or pen is
usable (No cable
required)
No keyboard
necessary
Suited to: novices,
application for
information retrieval etc
Low precision by
using finger
User has to sit or
stand closer to the
screen
The screen may be
covered more by using
hand
No direct activation
to the selected function
ADVANTAGE
S
DISADVANTAGE
S

18. Though the touch screen technology
contains some limitations it’s very user
friendly, fast, accurate, easy for the
novices & fun to operate. It has been
widely accepted. And now by just
modifying a little it can replace the
mouse and key board completely in near
future