The only modern ternary computer implementation was the Russian Setun: http://en.wikipedia.org/wiki/Setun http://en.wikipedia.org/wiki/Setun According to the

The only modern ternary computer implementation was the Russian Setun: http://en.wikipedia.org/wiki/Setun http://en.wikipedia.org/wiki/Setun According to the wikipedia article: http://en.wikipedia.org/wiki/Ternary_computer http://en.wikipedia.org/wiki/Ternary_computer ternary logic's elegance and efficiency is predicted by Donald Knuth to bring them back into development in the future