基于QuartusⅡ软件平台的八位数字频率计设计

Design of Eight Digital Frequency Meter Based on QuartusⅡ

介绍了以QuartusⅡ软件为开发环境,采用VHDL硬件描述语言,以"自顶向下"的方法,在大规模可编程逻辑器件上实现八位十进制数字频率计的设计。改变了以往数字电路小规模多器件组合的设计方式,设计灵活,硬件电路简捷,体积小,性能可靠。

The design of eight decimal frequency which bases on Quartus Ⅱ software development environmen and uses VHDL hardware description language,＂top-down＂ approach is introduced in the large-scale programmable logic devices.It changes the design method of many small-scale digital circuit design and device combinations in the past.This design is flexibility,the hardware circuit is simple,small and has reliable performance.