Vacuum tube displays, also known as cathode ray tube (CRT) displays, were an early type of visual display technology used primarily in television sets and computer monitors. These displays work by manipulating electron beams within a vacuum tube to illuminate phosphorescent screens, creating images. ### Key Components and Functionality: 1. **Vacuum Tube**: A sealed glass tube from which air has been evacuated, allowing electrons to move freely without obstruction from air molecules.
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