摘 要:使用硬件描述语言VHDL来实现简易频率计的制作。系统的频率检测范围为0~9999Hz,由分频器,计数器,数码管显示驱动等电路组成。通过对晶体的分频器得到精确的计数时间,具有结构简单,使用方便,精确度高等优点。
关键词: VHDL;简易频率计;可编程逻辑器件
Abstract: Development of facility cymometer use VHDL. Application range of this system measurement input frequency is 0~9999Hz. It contain frequency divide, counter, display drive and so on. Exact take count of time is obtained for divide frequency of crystal. The cymometer is characteristic of high precision and so on.
Key word: VHDL; cymometer; PLD