What's the Difference Between Touch Greens and Normal Graphics?

This was a also around the when on c n n, john king using t the magic wall. Dtwo thousand eight presidential election yys and those, i guess those were just totally custom things. Then there was no like, off the shelf t v sized touch greens at that point. I guesst there was a company called perceptive pixle that rings bells, which microsop later bought them. They they made a capacity of touch greenst at giant skill giant sizes. So that's what we had been using. That's what we were using at the time.