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本文介绍了一种用8031单片机控制的LED智能化显示器。显示屏为16×128点阵,每只LED采用φ5高亮度发光二极管,它同时能显示8个16×16点阵的标准汉字、字符或图案。采用计算机控制和动态扫描方式的LED显示器,一幅显示屏可以显示不同的内容,显示方式丰富,修改方便,显示图案稳定,功耗低,在广告宣传领域已开始得到应用。一、汉字显示工作原理本LED汉字显示器,采用动态扫描方式来显示不同的内容。用动态扫描方式显示汉字的关键是解决显示亮度和显示内容的稳定性。LED显示器的控制原理如图1所示,其中发光二极管采用LED625(橙色),晶体管采用9012。在脉冲周期的τ_1期间,LED625处于发光状态,在脉冲周期的τ_2期间,LED625
This article describes a kind of LED intelligent display controlled by 8031 MCU. Display for the 16 × 128 dot matrix, each LED with φ5 high-brightness light-emitting diodes, which can display eight 16 × 16 dot matrix standard Chinese characters, characters or patterns. The use of computer-controlled and dynamic scanning LED display, a display can display different content, display rich, easy to modify, display patterns stable, low power consumption in the field of advertising has begun to be applied. First, the Chinese characters display works LED Chinese characters display, using dynamic scanning to display different content. The key to displaying Chinese characters with dynamic scanning is to resolve the display brightness and the stability of the display content. LED display control principle shown in Figure 1, which uses LED625 LED (orange), the transistor 9012. During the τ_1 of the pulse period, the LED 625 is in a light-emitting state. During τ_2 of the pulse period, the LED 625