Alexander Graham Bell se enteró que por medio de una corriente continua se podría transmitir voz humana con claridad y sonido, lo patentó antes que su compañera Elisha Gray.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.