INTRODUCTION TO TOUCH TECHNOLOGY
• A touch screen is a
computer display screen
that is sensitive to human
touch, allowing a user to
interact with the computer
by touching pictures or
words on the screen.
• Touch screen technology
can be used as an
alternative user interface
with applications that
normally require a mouse,
such as a Web browser.
• Touch screen can also sense
other passive objects such
Touch screens emerged
from academic and
corporate research labs
In 1971, the first "Touch
Sensor" was developed by
Doctor Sam Hurst (founder
of Elographics) while he
was an instructor at the
University of Kentucky.
Apple was the first with a touch
screen phone in 1983. Jason
Ford of Elo Touch Systems, the
technology, for providing the
touch technology. In 1971, the
first "touch sensor" was
developed by Doctor Sam
The Nokia 7710 is a first touch
screen mobile phone model
produced by Nokia. The 7710 is
based on the Nokia 7700 which
was never released. It is Nokia's
first, and so far only smart phone
to run the Series 90 GUI a top
the Symbian OS.
1. Touch sensor
Typically a glass
panel with a touchresponsive surface
A small PC card
information that PC
3. Software Driver
It’s a program that
between OS and
Types of Touch Screen Displays
1.Capacitive Touch screens:
A capacitive touch screen consists of two spaced
layers of glass, which are coated with conductor
such as Indium Tin Oxide (ITO).
• Supports Multi touch and does not need any stylus.
• Made of glass instead of plastic, so looks sharper
• Because the technology is dependent on the
conductive nature of human body, it doesn’t work
if the user is wearing gloves.
• Because of having a complex structure, these are
• Glass is more prone to breaking.
2.Resistive Touch screens:
A resistive touch screen comprises of several layers,
out of which the flexible plastic and glass layers are two
important electrically resistive layers.
The front surface of resistive touch screen panel is a
scratch-resistant plastic with coating of a conductive
material (mostly Indium Tin Oxide)
The second important layer is either made of glass or
hard plastic and is also coated with ITO.
•High resistance to dust and water
•Best used with a finger, gloved hand or stylus.
•Not too sensitive, you have to press down harder
•Does not support multi-touch
Error free input
Does not interfere mouse and
Make computing easy ,
powerful and fun
Easy to install
Compatible with Windows,
Macintosh and Linux.
It benefits children
The Screen gets dirty from
Screen has to be really big not to
miss things when pressing them
with your finger
Big screen leads to low battery life
These devices are more expensive
than alternate devices
Electric shocks on touching the
devices with wet hands
•Gas and fuel stations
•Library resource guides
•Airport terminal passenger internet and emails
•And many more uses……
If we're among those who think that touch
screen phones are only available on high-end
devices, think again! Gartner Inc estimated that
the global market for touch screen mobiles has
increased from 11.7% to 12.7% in the 1st
quarter of 2013. The market share for touch
screen was about US$14bn and expected to be
triple in the next decade in 2012. By 2013,
touch screen mobiles will account for 58 per
cent of all global mobile sales, and more than
80 per cent in high-end markets, such as North
America and Western Europe.
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
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