The paper introduces a kind of matrix LED display system based on 51 series MCU.

本文介绍了一种基于单片机的点阵LED汉字显示系统。

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It can be used to measure the luminous intensity, forward voltage, reverse current of each luminous dot in all kinds of LED luminous dot matrix.

能测试各种LED发光矩阵每个发光元的发光强度，正向压降和反向电流。

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Another significant advantage: this projector USES very little energy, requiring on average 30% less current than the matrix - or LED-based technology currently available on the market.

卫星投影仪的另一个优势是耗电少，比目前市场流行的matrix或LED技术的投影仪平均降低30%。

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This model upgrades to FocaLight LED backlighting - claims full matrix LED for better uniformity.

ENGADGET: Live from Toshiba's CES press conference

"Gently rising out of the sidewalk", in the words of its creators, this 12-foot behemoth includes a stack of LED matrix screens, similar to those found on Times Square billboards.

BBC: New York's phone boxes get new lease of life