puuteekraan

A puuteekraan, or touchscreen, is a display screen that allows users to interact with a device by touching its surface. It combines the functions of a display and an input device, eliminating the need for a separate keyboard or mouse in many applications. When a user touches the screen, the touch event is registered by sensors, and the device's operating system interprets this input to perform an action.

There are several common types of touchscreen technology. Capacitive touchscreens, widely used in smartphones and tablets, detect the electrical properties of a conductive object, such as a finger. Resistive touchscreens, often found in older devices or industrial equipment, work by detecting pressure applied to the screen surface, causing two conductive layers to make contact. Other technologies include infrared and surface acoustic wave (SAW) touchscreens, though they are less common in consumer electronics.

Touchscreens offer intuitive and direct manipulation of on-screen elements, making them popular for a wide range of devices. They are integral to mobile phones, tablets, personal digital assistants (PDAs), kiosks, ATMs, car infotainment systems, and many other electronic devices. The ease of use and versatility of touchscreens have significantly influenced the design and functionality of modern technology.