-
Calculadoras mecanicas
https://es.wikipedia.org/wiki/Calculadora_mec%C3%A1nica -
Maquina analitica https://es.wikipedia.org/wiki/Ada_Lovelace
-
Maquina del censo
https://es.wikipedia.org/wiki/Tabuladora
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.