This program is an open project, based on an example of Cleve Moler " Fourier Analysis"  for Dual Frequency analysis for GSM.
The features are :
1. Frequency computation of the cellphone numbers 0-9,
2. the ability to generate a Random number as simulating of calling a number composed of 10 digits, and analyse the entire signal .
The frequency analysis is based on Finite Fourier Transform (FFT),