Word: lcd
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...funny cardboard-frame glasses used to watch old-style 3-D movies, the eyewear creates a stereoscopic effect by using lenses filled with liquid-crystal diodes, the same material that forms the numerals on the face of a digital wristwatch. When jolted by an electrical current, an LCD lens can instantly switch from being essentially transparent to being totally opaque -- like an efficient electronic shutter. Controlled by an infrared signal broadcast from the projection booth, the goggles' left and right lenses open and close 24 times a second, in synchronization with a pair of Imax projectors showing first the left...
Portables can be quite sophisticated. One unit is not only AM/FM but is equipped with a liquid crystal diode (LCD) digital clock. A separate lithium battery with a service life of one year is used for the clock and three AA pen-light batteries for the radio. The clock is equipped with a beep wake-up alarm that will run for about four minutes after the selected alarm time has been reached and it will then turn off automatically. Unlike analog clocks, the digital in the radio has an AM and PM indicator. The clock has an hour switch, minute...
...lure buyers. Some of the new models are called "automatic," meaning selfwinding; others are battery-powered and are variously called "electronic," "solid state" and "quartz crystal." Still another timekeeping development is about to reach the jewelry store. Early next year Longines will begin selling a "liquid crystal digital" (LCD) watch that is battery-powered and displays the hour, minute, second and date in digits on a miniaturized TV-like screen. The cost: about...