幅频特性测试：主要用DDS芯片AD9851实现在5秒内完成步进为1KHZ的频率特性测试。-Amplitude-frequency characteristics of the test: The main use of DDS chip AD9851 to achieve in 5 seconds to complete the step for the frequency characteristics of the test 1KHZ.

pic 单 片 机 的 频 率 计 程 序 设 计 实 例-pic microcontroller programming examples Frequency Meter

基于stc12系列单片机并利用FFT实现在32*64点阵屏上的音乐频谱的显示，可以实现64分频-Based on stc12 series single chip microcomputer and using FFT in 32 of the music spectrum of* 64 dot matrix screen display, frequency can be achieved 64 points