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Questions and Answers
Which technology uses ultrasonic waves that pass over the touchscreen panel to determine the position of a touch event?
Which technology uses ultrasonic waves that pass over the touchscreen panel to determine the position of a touch event?
- Resistive touchscreen
- Infrared touchscreen
- Capacitive touchscreen
- Surface acoustic wave (correct)
What can interfere with the functionality of a surface acoustic wave touchscreen panel?
What can interfere with the functionality of a surface acoustic wave touchscreen panel?
- Transparent conductor
- Outside elements (correct)
- Indium tin oxide
- Ultrasonic waves
What type of touchscreen panel consists of an insulator coated with a transparent conductor?
What type of touchscreen panel consists of an insulator coated with a transparent conductor?
- Capacitive touchscreen (correct)
- Infrared touchscreen
- Resistive touchscreen
- Surface acoustic wave
What is the measurable change in capacitance when a capacitive touchscreen is touched?
What is the measurable change in capacitance when a capacitive touchscreen is touched?
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What are some applications of surface acoustic wave (SAW) technology?
What are some applications of surface acoustic wave (SAW) technology?
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Study Notes
Touchscreen Technologies
- Surface acoustic wave (SAW) technology uses ultrasonic waves that pass over the touchscreen panel to determine the position of a touch event.
Interference with Surface Acoustic Wave Touchscreens
- Dust, dirt, and moisture can interfere with the functionality of a surface acoustic wave touchscreen panel.
Capacitive Touchscreens
- A capacitive touchscreen panel consists of an insulator coated with a transparent conductor.
Capacitive Touchscreen Functionality
- When a capacitive touchscreen is touched, it causes a measurable change in capacitance.
Applications of Surface Acoustic Wave Technology
- Surface acoustic wave (SAW) technology has applications in: • Touchscreens • Scanning systems • Industrial sensors • Security systems • Medical devices
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