13-08-2013, 03:27 PM
A SEMINAR ON TOUCH SCREEN
[attachment=57128]
INTRODUCTION
In 1974, the first touch screen developed by Sam Hurst and Elographics.
The HP-150 from 1983 was probably the world's earliest commercial touchscreen computer.
Now days, Multipoint touchscreen facilitates the tracking of more than one finger on the screen.
Advantages of resistive touch screen technology…..
Lower cost.
Can operate with any pointing devices like stylus and nail.
Good for hand writing recognition system.
Resistive touch screen is not effected by any elements such as dust or water.
Capacitive
It consist of a glass panel with capacitive (charge storing) material coating on its surface.
Circuits located at the corners of the screen measure capacitance of a person touching the overlay.
Surface acoustic wave
Surface wave technology uses ultrasonic wave that passes over the touch screen panel.
Widely used in application such as computer based training and information.
Applications
Many games use the touchscreens as a primary controlling device.
Touchscreens becomes familiar in kiosk systems (retail and tourist settings).
The popularity of smart phones, ATMs, and many types of information appliances is driving the demand for touchscreens.
Touchscreens are popular in heavy industry and in other situations, such as museum displays or room automation.
[attachment=57128]
INTRODUCTION
In 1974, the first touch screen developed by Sam Hurst and Elographics.
The HP-150 from 1983 was probably the world's earliest commercial touchscreen computer.
Now days, Multipoint touchscreen facilitates the tracking of more than one finger on the screen.
Advantages of resistive touch screen technology…..
Lower cost.
Can operate with any pointing devices like stylus and nail.
Good for hand writing recognition system.
Resistive touch screen is not effected by any elements such as dust or water.
Capacitive
It consist of a glass panel with capacitive (charge storing) material coating on its surface.
Circuits located at the corners of the screen measure capacitance of a person touching the overlay.
Surface acoustic wave
Surface wave technology uses ultrasonic wave that passes over the touch screen panel.
Widely used in application such as computer based training and information.
Applications
Many games use the touchscreens as a primary controlling device.
Touchscreens becomes familiar in kiosk systems (retail and tourist settings).
The popularity of smart phones, ATMs, and many types of information appliances is driving the demand for touchscreens.
Touchscreens are popular in heavy industry and in other situations, such as museum displays or room automation.