... segment in time ranging from 1623 through 1945 is known as The Mechanical Era. We can trace back at least to the early 17th century when mathematicians such as Wilhelm Schickhard, Blaise Pascal, and Gottfried Leibnitz designed machines that could solve mathematical problems such as addition, subtraction, multiplication, and division. Those computing machines were the very first calculators. In 1623 ... Wilhelm Schickhard invented the calculating clock. Although, the plans were lost in the war several times the machine was finally reconstructed in working fashion in 1960. It was however, ...

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• Grade Level: High School

... machine was built by Blaise Pascal in 1642. Pascal, intending to help his father (a tax collector), created a system of dials that could perform the addition of numbers. Several decades later, Gottfried Wilhelm von Leibniz invented a digital apparatus that could not only add, but could also multiply. It was not until 1820 that a mechanical calculator, developed by Charles Xavier Thomas, was introduced that ... ...

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• Approx Pages: 30
• Grade Level: High School

... entered with dials to help his father with his duties. Pascaline also created by him which used eight movable dials to add sum up to eight figures long. In 1671, Gottfried Wilhelm von Leibniz invented a computer that had a special step system gear mechanism for the addend digit, and it was build in the 1694. When Thomas of Colmas created the first successful ... ...

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