自己写的频率计显示部分，，，与fpja通信使用即可实现1——10M的频率测量-himself wrote the frequency meter shows, and, fpja communications and can be realized using 1-- Frequency Measurement 10M

本设计是基于MCS-51单片机的等精度频率计。输入信号为峰峰值5v的正弦信号，频率测量范围10HZ~100MHZ ，频率测量精度为0.1 。采用1602液晶显示器显示测量结果。信号源由PROTEUS 的虚拟信号发生器产生。-The design is based on the MCS-51 microcontroller, such as frequency meter accuracy. Input signal 5v peak to