-
In the XVII century the first mechanical calculator was invented by a German inventor.
-
In the XX century a mathematician improved the calculator and the new calculator could do more compelx equations.
-
In the XXI century the calculator is added to new technologies: telephones,computers...
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.