【摘要】：LED顯示屏因為其使用壽命長、功耗低、亮度高、可視范圍廣等優(yōu)點，被廣泛應(yīng)用于機場、道路、車站、證券交易、戶外廣告等公共場所。 與LCD相比LED成本低、亮度高且可以拼接成需要的尺寸。傳統(tǒng)的LED顯示屏常采用8位的微處理器，由于其運行速度、尋址能力和功耗等問題，，已難滿足顯示區(qū)域較大、顯示內(nèi)容切換頻繁的相對較復(fù)雜的應(yīng)用針對目前使用的大型LED顯示屏存在的問題，結(jié)合當(dāng)今先進的微控制器產(chǎn)品和控制技術(shù)。 本文提出了一款基于ARM微處理器的大屏幕LED顯示控制的設(shè)計方案。主要內(nèi)容是采用ARM嵌入式微處理器LPC2114作為控制器，8位移位寄存器74HC595作行數(shù)據(jù)傳輸，16位數(shù)據(jù)選擇器74HC154作列掃描信號，通過仿真軟件Protues完成多塊大屏幕LED的顯示。
[Abstract]:Because of its long service life, low power consumption, high brightness and wide visual range, LED display screen is widely used in public places such as airports, roads, stations, stock exchanges, outdoor advertisements and so on. Compared with LCD, LED is low cost, high brightness and can be stitched into the required size. The traditional LED display screen often uses 8-bit microprocessor. Because of its running speed, addressing ability and power consumption, it is difficult to satisfy the large display area. The relatively complex applications of frequent content switching aim at the problems existing in the large LED display screen which is currently used, combining with the advanced microcontroller products and control technology. This paper presents a design scheme of large screen LED display control based on ARM microprocessor. The main content is to use ARM embedded microprocessor LPC2114 as controller, 8-bit shift register 74HC595 as row data transmission, 16-bit data selector 74HC154 as column scan signal, and display multiple large-screen LED through simulation software Protues.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TN873

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