实现正余弦信号硬件细分功能，可以进行可逆计术，测量激光干涉仪位移信号，利用LCD显示最终位移。-To achieve the function of the chord signal hardware segmentation, can be reversible measurement, measurement of laser interferometer displacement signal, the use of LCD display the final displacement.

利用CORDIC旋转因子的办法实现FPGA的各种必须函数，这里只要实现正余弦函数(The use of CORDIC rotation factor method to achieve the various functions of FPGA, here as long as the realization of sine and cosine function)