The document provides a timeline of digital technologies from 1859 to the present. It begins in the pre-microcomputer era when John Dewey advocated for hands-on, experiential learning. The microcomputer era began in the 1970s-80s with the development of microprocessors. Mainframes were large computers used by organizations. Word processing software allowed easy editing. The internet era enabled email, video conferencing, online learning, and social networking. Mobile technologies now include e-books, podcasts, and ubiquitous connections.