A TV, or television, is an electronic device used for viewing video content. It displays images and plays sound, allowing people to watch movies, shows, and news. Modern TVs often come with features like high-definition (HD) resolution, smart capabilities for streaming, and various input options for connecting devices like DVD players and gaming consoles. Televisions have evolved significantly since their invention in the early 20th century. Early models used cathode ray tubes (CRTs), while today's models typically use LED, LCD, or OLED technology for better picture quality. Many TVs also support internet connectivity, enabling access to online streaming services like Netflix and YouTube.