What term describes the light-emitting components within display monitors?

• A. CCD
• B. DEL
• C. PSP
• D. picture element (pixel)

Answer: (D)

Picture element, or pixel, is the term for the light-emitting component on a display. A pixel is the smallest area of the screen that can produce its own color and brightness, and by controlling many pixels together, the monitor creates the full image you see. Different display technologies handle light differently—LCDs use a backlight and liquid crystals to modulate light in each pixel, while OLEDs have each pixel emit its own light. Other terms in the choices fit imaging or lighting roles outside the display’s fundamental unit: a CCD is a sensor used to capture light, not a display element; DEL refers to light-emitting diodes in some contexts but describes the light source rather than the unit of the image; PSP is unrelated to display components.