Installation performed without using a computer monitor connected. The TS1000 was normally plugged into a regular TV that served as a computer monitor. Sony started developing the Trinitron for computer monitor use in the late 1970s. The size (diagonal) of television and computer monitor screens is always denominated in inches. Teletext pages were displayed on the computer monitor. It allows the GameCube play on a standard computer monitor in 480p. The Teddy Scare 'Rita Mortis' can be seen sitting next to her computer monitor. The sentence appears on a computer monitor word-by-word. The images may represent electrical waveforms (oscilloscope), pictures (television, computer monitor), radar targets or others. During sleep, the computer monitor can display multiple channels continuously. Even computer monitor bezels themselves were used to attach reminder notes and business cards. Modern presentations are often displayed digitally using a video projector, computer monitor, or large-screen television. A computer monitor is an output device that displays information in pictorial form. High-definition signals require a high-definition television or computer monitor in order to be viewed.