毕业设计 LED显示屏控制设计（仅供参考）.doc

毕业设计 LED显示屏控制设计(仅供参考)
摘要系统主要有三部分组成:控制板、驱动板、+单片机和EPM240T100C5N型CPLD,传统的LED大屏幕显示系统用中小规模集成电路实现,系统体积较大、调试困难、,器件性能大大改善,复杂可编程逻辑器件具有高集成度、高速度、高可靠性、在线可编程(ISP),本课题运用复杂可编程逻辑器件来完成电路功能,不仅能够满足大屏幕系统高速图像数据传输对速度的要求,改善了电路性能,而且增加了电路设计的灵活性,设计中可以根据实际应用的需求灵活修改相应硬件描述语言程序,而不需要修改电路硬件设计,缩短了设计周期,,对LED大屏幕进行数据扫描,显示一幅完整的图像.
关键词:LED大屏幕复杂可编程逻辑器件在线可编程
Abstract
The system mainly has three parts positions: Control board,actuation board, display board is made up of the integrated circuit STC12LE89R/D+ and the CPLD EPM240T100C5N of Altera traditional LED Displaying system was put into practice by small or middle scale integrated bulk of system is more large;the debugging is difficult; what is more, the system is not easy to the development of large scale integrated circuit and capability ponents have been improved a 's hallmark are high integrated、high speed、high reliability ISP and so on. As a result, this design plishs the function of circuit, which not only can satisfy the high speed image data transmission of large screen system and improve the performance of circuit, but also increase the flexibility of circuit design. In the design, it is possible to act hardware description language procedure according