This chapter discusses the different types of color CRTs and basic monochrome construction. The obvious difference is thousands of potential colors versus a single monochromatic image. In that sense, monochrome becomes an application-specific display device as opposed to a general-purpose one. Buried within the basic architectural differences are performance issues that influence the suitability of one color format over another and the trade-offs involved, as well as the differentiating attributes with monochrome.
All CRTs share a few things in common in the way they produce luminance energy. They must provide a source of electrons that can be controlled over a range of current flow. They must accelerate the electrons to deliver kinetic energy to the phosphor and be able to focus those electrons to a small spot at the center of the screen. The CRT is not responsible for bending the electron beam to fill in the remaining screen area. That comes from the supporting circuits and the deflection yoke mounted on the CRT.
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