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herman hollerith an american inventor built a machine to count a census .it used punched card and gears like the previus ones , it worker with eletricity . his company grew to become the first computer manufracturer in the word IBM.
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.