Abstract
The cathode ray tube (CRT), especially if the definition is extended to cover all electron-beam addressed display devices, both self-luminous and light-modulating types, remains preeminent in today's display world in spite of competition from a variety of newer laser beam and matrix addressed display technologies. In this paper, we examine some of the reasons for the CRTs success, give a few examples of its continuing adaptability, and speculate on those weak points which may let other technologies get a foot in the door.

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