I want to play NFS Most Wanted on the PC and I do not have any Graphic Card. While installing this system asks to install Directx (Even I have already installed it) and displays an Internal system error.

Please somebody guide me about this game and Directx Issues.


Question: Can you send data usefully over one wire, literally one wire?
Answer: Over a very limited range - yes.  You will need to have a return path that is supported by electric fields.  The best way to look at this would be like a AC coupled circuit - coupled through a capacitor of which the capacitor is formed by some plate that the circuit is coupled to and another plate that is providing a return path.

We know that electric fields can couple over long-ish distances, some Anti-aircraft proximity fuzes from WWII used an e-field detection technique that would trigger the bomb because the shell and the aircraft would be carrying different levels of charge and thus e-field lines would form linking the two and thus change the capacitance in an internal circuit.

This in no way violates physics, it's best to view it as a capacitor that is so physically large that you can walk between the plates.  However, the actual capacitance value would be very small.

uChip just released some technology that uses a similar effect that is called GestIC and they couple with E-Fields.  Here they couple on both the top rail and the return path so it is a "Zero" wire solution.  But it will also work if you ground one of the plates inside the remote device to one polarity of the plate in the "pad".