When size matters
AFTER more than 50 years, the cathode-ray tube is still the king of table-top screen displays. But there is now a huge market for truly miniature displays, just millimetres in diagonal—far smaller than the tube could ever be. At the other end, cheap devices that can easily project a gigantic image from a tiny package are much in demand. What is needed is the electronic equivalent of a 35mm slide.
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