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El ábaco es considerado el dispositivo mas antiguo utilizado para realizar operaciones aritméticas
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Constaba de una serie de barritas de madera que contenia las tablas de multiplicar
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.