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发光二极管(LED)除了用作指示灯、数字显示和水平仪显示外,还被广泛用作短距离光通讯的光源,以及传感器、印刷机和传真通讯的光源。尽管除显示外其他方面对LED的需求量最近在增加,但是作显示用的LED在数量上仍占绝对优势。按照国际贸工部(MITI)的统计数字,1984年LED的产量(包括可见光显示与通讯和传感器用的红外显示)比上年增加43％,达到982亿日元,数量增加了42％,达到38.76亿
In addition to being used as indicator light, digital display and level indicator, light-emitting diodes (LEDs) are also widely used as light sources for short-distance optical communications and as light sources for sensors, printers and facsimile communications. While the demand for LEDs has been increasing recently for all but the display, the number of LEDs for display still represents an absolute advantage. According to statistics from the Department of International Trade and Industry (MITI), LED production in 1984 (including infrared displays for visible light and communications and sensors) increased 43% from the previous year to 98.2 billion yen, an increase of 42% 3.876 billion