동아사이언스

How the Concept of Invention Changed

과학동아 2012년 01호

developed the first smart phone, called Simon. It was already demonstrated in 1992. Weighing in at 680g, Simon had a touchscreen and could send emails and even faxes which current smartphones cannot handle. Simon was in a way very advanced forefather of current smartphones. The Tablet PC Do you know when the concept of tablet computer was first invented? In 1968, computing pioneer Alan Kay at ...