CPLD在LED点阵显示器中实现字符滚动的应用

The Application of CPLD in scrolling characters display of LED

详细讨论并实现了CPLD在LED点阵列滚动字符显示中的应用。文中分析了滚动字符的显示原理和CPLD的特点,设计出了实现字符滚动显示的硬件电路,并结合电路和字符显示原理用VHDL语言完成了实现字符滚动显示的程序设计。通过适当的修改,可以实现不同速度、各种字符的显示。

scrolling characters display in LED matrix based on CPLD was introduced and realized in this paper. The display principle of scrolling characters in LED and the features of CPLD were analyzed and control circuit based on CPLD was designed for scrolling characters display, then the method of program design with VHDL was discussed, The characters can be display with varied speed by appropriate modification.