Here i discussed about development,application,advantage,disadvantage of touch screen technology

1. TOUCH SCREEN TECHNOLOGY
BY
M.UDAY KUMAR

2.  Touch screen is an input and output device
normally layered on the top of an electronic
circuit display of an information processing
system

3.  Foundation for touch screen technology
started with music industry
 Developed in year 1948 Hugh le canines
electronic sackbut
 Sackbut is an electronic musical instrument

5.  IN SCREENS THERE IS TWO LAYERS IN
BETWEEN THERE IS CONDUCTING MATERIAL
LIKE TIN OXIDE

6.  RESISTIVE
 CAPACITIVE
 SURFACE ACOUSTATIC WAVE(SAW)
 INFRARED LED
 WE ARE USING SURFACE ACCOUSTIC WAVE
TECHNOLOGY IN THIS A WAVE IS GENERATED
WHEN WE TOUCH A SCREEN

7.  TRADE SHOW DISPLAYS
 MUSEMS(TOURISIM DISPLAY)
 EMPLOYEE TIME CLOCKS
 WORLD WIDE WEB ACCESS KIOSKS
 INDUSTRIAL PROCESS CONTROLS
 HOME AUTONATION SYSTEMS
 SMART PHONES
 ATMS

8.  Switch and buttons are not physically required.
Device makers can make and modify various input
interfaces creatively by software.
 With multi-touch function, various operations/inputs
(eg: zoom-in/zoom-out, rotation) are possible.
 Because a user operates an electronic device by
directly touching the images on the display he is
seeing, the operation will be intuitive, thus anyone
can operate it from first use.
 The whole unit is space-saving because display and
input space are integrated. There is a lot of flexibility
in design.
 Unlike keyboard or physical switch, there will be no
dirt, dust, and moisture getting into the spaces
between buttons. Thus, it is easy for maintenance

9.  Since a display is directly touched, the display
may get dirty, then become less-visible. A direct
touch may also cause scratches on the screen
that may cause malfunction in some cases.
 Unlike push-button and mouse, users will not
feel "click" when a user input a touch screen, thus
operation may become clumsy sometimes.
However, there are certain touch screens that
provide "click feeling" when touched.
 Touch screen is difficult to be operated for the
visually impaired. Some creative ways to let them
know where to touch are needed. Sound
navigation and/or physical buttons might be
helpful in combination with touch screen.

10.  THOUGHT THE TOUCH SCREEN TECHNOLOGY
CONTAINS SOME LIMITATIONS IT IS VERY
USER FRIENDLY, FAST AND ACCURATE,EASY
FOR MOVES AND FOR FUN TO OPERATE. IT IS
WIDELY ACCEPTED. AND NOW BY JUST
MODIFYING A LITTLE IT CAN REPLACE MOUSE