内附使用说明，基于LPC213X ARM的FFT程序，ADS1.2工程，带proteus仿真，精确测量输入信号频率，带labvieFFT/IFFT仿真，VC6工程正余弦参数表生成程序，VC6工程的FFT/IFFT DLL库-with README inside,FFT program, ADS1.2 project LPC213X ARM-based, with proteus simulation, accurate measurement of the frequency of the in