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AshishAshish
Pawan kumariPawan kumari
Bharat
Deepak
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A display which can detect the presence and
location of a touch within the display area.
A display which can detect the presence and
location of a touch within the display area.
What is Touchscreen ?What is Touchscreen ?
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INTRODUCTIONINTRODUCTION In 1974, the first touch screen developed byIn 1974, the first touch screen developed by
Sam HurstSam Hurst andand Elographics.Elographics.
TheThe HPHP--150150 from 1983 was probably thefrom 1983 was probably theworld's earliest commercial touchscreenworld's earliest commercial touchscreen
computer.computer.
Nowdays, Multipoint touchscreen facilitatesNowdays, Multipoint touchscreen facilitatesthe tracking of more than one finger on thethe tracking of more than one finger on the
screen.screen.
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How Does a
Touchscreen Work?
1. Touch Sensor
2. Controller
3. Software Driver
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1. Touchsensor
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A small PC cardwhich translates
information that PCcan understand.
2. Controller
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Driver allows to
work with existingsoftware.
3. Software Driver
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TechnologiesTechnologies
1. Resistive
2. Infrared
3. Capacitive
4. Surface acoustic wave
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1. Resistive
A resistive touchscreenA resistive touchscreenpanel is composed ofpanel is composed of
several layers.several layers.
Resistive touch screenResistive touch screenpanels are not affectedpanels are not affectedby outside elementsby outside elements
such as dust or water.such as dust or water.
Nintendo DS is anNintendo DS is anexample of Resistiveexample of Resistivetouchscreen.touchscreen.
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2. Infrared
The new generation IRtouchscreen LCD has been
increased brightness, clarityand durability.
Touched with a finger,gloved hand, fingernail, or
stylus, it delivers a fast,accurate response everytime.
Plasma screens are one of the type of Infrared
touchscreen
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3. Capacitive
Capacitive touch screens are
not affected by outsideelements and have high clarity
Apple iPhone is an example of Capacitive
touchscreen.
Capacitive sensors can eitherbe touched with a bare finger
or with a conductive devicebeing held by a bare hand.
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4. Surface Acoustic Wave
Surface wavetechnology uses ultrasonicwaves that pass over thetouch screen panel.
Widely used in applicationssuch as computer basedtraining and information
kiosk displays.
The panel is all glass, there are no layers thatcan be worn, giving this technology the highestdurability factor and also the highest clarity.
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ApplicationsApplications
Many games use the touchscreens as a primaryMany games use the touchscreens as a primarycontrolling device.controlling device.
Touchscreens becomes familiar in kiosk systemsTouchscreens becomes familiar in kiosk systems
(retail and tourist settings).(retail and tourist settings).
The popularity of smart phones, ATMs, PDAs andThe popularity of smart phones, ATMs, PDAs andmany types of information appliances is driving themany types of information appliances is driving the
demand for touchscreens.dem
and for touchscreens.
Touchscreens are popular in heavy industry and inTouchscreens are popular in heavy industry and inother situations, such as museum displays or roomother situations, such as museum displays or roomautomation.automation.
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A T M
AutomatAutomat
ic Telleric Teller
MachineMachine
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An interactive terminal with a Touch screenor keypad that allows consumers with credit
cards or debit cards to withdraw cash.The customer isidentified by inserting aplastic ATM CardATM Card that
contains a unique cardnumber and somesecurity information.
SecuritySecurity is provided bythe customer enteringa PersonalPersonalIdentificationIdentificationNumberNumber(PIN).
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British actor Reg VarneyBritish actor Reg Varney using theworld's first ATM in 19671967, located
at a branch ofBarclays BankBarclays Bank.
The system was developed by DeDeLa RueLa Rue .
Working of an ATMWorking of an ATM [Display, Cardreader, CPU, Encrypting PIN Pad,Cash Cartridge, Etc.
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Adv
ant
ages
Adv
ant
ages
1.1. Enables us to interact directlyEnables us to interact directly
what is displayed on the screen.what is displayed on the screen.
2.2. Lets us to do without requiring anyLets us to do without requiring any
intermediate device (stylus) thatintermediate device (stylus) that
needs to be held in the hand.needs to be held in the hand.
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