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The document provides a history of interaction design and human-computer interaction from the 1940s to the 2000s. It describes the evolution of users from inventors and experts in the early period to widespread personal use today. Interfaces progressed from switches and cables to modern graphical user interfaces, and affordability increased from only the military and large organizations to widespread personal adoption. The timeline shows how interaction design shaped our lives through the development of new technologies over the decades.



































































































