基于FPGA的LED显示管理电路的设计

Design of LED Display Control Circuit Based on FPGA

各种数字系统的终端设备都需要对十进制信息进行数码显示,LED(发光二极管)是最常用的显示器件。文中在FPGA(现场可编程门阵列)的硬件基础上,运用VHDL(甚高速集成电路硬件描述语言)对4位LED的显示管理进行了设计,增加了以往显示中所没有的闪烁和独立关断某一路的显示功能,同时使用MAX+PLUSⅡ开发软件对设计电路进行了功能仿真和硬件验证。设计具有一定的实用性和可扩展性。

Digital display of decimal information is needed for all kinds of terminal equipments of digital systems, among which LED is the commonest display devices. On the hardware basis of large-scale programmable logical devices FPGA, and using hardware description language VHDL, a four bits LED display control circuit is designed, and flicker and turn-off one bit independently function are added. In addition, with MAX ＋ PLUSII Ⅱ development software, the functional simulation and hardware verification of the designed circuit are carried out. The design has practicality and scalability to some degree.