Facts for Prelims (FFP)
Source: TH
Context: The article explores the working principles of touchscreens, focusing on their historical development and prevalent technologies.
- Touchscreens serve the dual purpose of receiving inputs and displaying outputs, making them integral to devices like smartphones, ATMs, household appliances, and more.
There are two main types of touchscreens, capacitive and resistive.
- Capacitive touchscreens, used in smartphones, operate by detecting changes in electric fields when a finger touches the screen.
- Resistive touchscreens, with two conductive sheets separated by a small gap, function based on the change in resistance when touched.
The rising dominance of capacitive touchscreens in consumer electronics since 2007 due to their superior image clarity, sensitivity, and durability compared to resistive touchscreens.
