A display that incorporates a human interface device which records positional information of points of contact between the user and the display
Touchscreens have two components: a display and a touch sensor array. The display is often irrelevant to the form of touch sensor used, and can be CRT, LCD, OLED, eInk, or conceivably any other electronic display technology.
The touch sensor array has many forms. Arguably the most common is capacitive, being present on the overwhelming majority of smartphones and tablets. Resistive touchscreens are also common in older consumer electronics.