What is the small element in an output display device or picture?

The small element in an output display device or picture is known as a pixel. Pixels are the smallest units of a digital image that can be displayed or represented on a screen. Each pixel contains color information, and together they form the complete image, with higher pixel density resulting in greater detail and clarity. In modern displays, pixels can also vary in size and shape, depending on the technology used, such as LCD, LED, or OLED.