该仓库为基于TDC芯片的频率计数器的Verilog实现 频率计数器原理可参考 Jin, K., Tang, W., Deng, W., Huang, Y., Ding, X., Wu, T., Yang, G., & Huang, G. (2019). An improved frequency meter for atomic magnetometer based on accurate time measurement. IEICE Electron. Express, 16, 20190310.