Promethean and Other Interactive Whiteboards and Tablets

http://en.wikipedia.org/wiki/Interactive_whiteboard

http://en.wikipedia.org/wiki/Promethean_World,
http://www.prometheanworld.com/en-us/business,
http://www.youtube.com/watch?v=7O2X_2lhLtg,
http://www.prometheanplanet.com/en/

http://en.wikipedia.org/wiki/Blackboard,
http://en.wikipedia.org/wiki/Whiteboard

http://en.wikipedia.org/wiki/Etch_A_Sketch,
http://en.wikipedia.org/wiki/Telautograph

http://en.wikipedia.org/wiki/History_of the Tablet_computer,
http://en.wikipedia.org/wiki/Comparison_of_tablet_computers