Eniac (Electrical Network Interactive Analysis Console) is an educational software witch performs a lot of mathematical and engineering calculation, and it was initially designed to study the behavior of electrical networks, but its use goes far beyond this purpose.

ENIAC Features:
1. Perform a lot of scientific calculations by mean of the ENIAC Language;
2. Provide a powerful general-purpose embeddable scripting language.
3. Resolution of electrical network is an application of ENIAC (but is not the only one).
4. Using method of admittance matrix to resolve networks.
5. Calculation of Transfer Function and Impedance between every couple of nodes.
6. Plotting of bode plots on GIF format files. See an example produced by ENIAC.
7. Calculation and plotting of output signal from every node after apply an input signal.
8. Calculation of poles and zeros using Bairstow-Newton method.

The license of this software is Free, you can free download and free use this calculator software.