Which of the following is a common type of display technology?

LCD (Liquid Crystal Display) is a prevalent type of display technology widely used in various applications, such as televisions, monitors, and mobile devices. It works by manipulating light through liquid crystals, which are sandwiched between layers of glass or plastic. When voltage is applied to the liquid crystals, they align in ways that either block or allow light to pass through, creating images.

LCD displays are known for their slim profiles, energy efficiency, and ability to produce sharp images with vibrant colors. They have been a staple in the display market for many years, making them familiar to consumers and industries alike. Their versatility and cost-effectiveness contribute to their commonality in homes and offices.

While LED, OLED, and Plasma technologies are also significant and have their own unique advantages, LCD remains one of the most widely employed display technologies, particularly in settings where budget and broad accessibility are considerations. Each of these other technologies has its specific applications but may not be as universally used as LCD.