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# Who invented the adding machine?

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### Quick Answer

**The adding machine was invented by French mathematician, physicist and philosopher Blaise Pascal.** Pascal developed his mechanical device, which he named the Pascaline, in 1642. The apparatus, whose predecessor was the abacus, is regarded as the original digital calculator in that it operated by counting integers.

In 1671, the German mathematician and philosopher Gottfried Wilhem von Leibniz expanded on its design, resulting in the Step Reckoner, a calculating machine first built in 1673. The Step Reckoner could multiply as well as add by using repeated addition and shifting.

The first modern computer, the Analytical Engine, was not conceived until several years later in 1834 by English mathematician and mechanical engineer Charles Babbage.

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Q:
## What is the formula used to find the area of an isosceles triangle?

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Full Answer >**The common formula to find the area of an isosceles triangle is area equals 1/2 * base * height of triangle.**The height is the line bisecting the two equal sides of the triangle and intersects the midpoint of the base.Filed Under: -
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## What is area in math?

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Full Answer >**In mathematics, area is defined as the amount of two-dimensional space occupied by a shape.**It can be calculated by multiplying two lengths of the shape, such as the length and width of a rectangle. The units of area are always unit of length squared.Filed Under: -
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## Does the Winchester Ballistics Calculator measure trajectory?

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Full Answer >**The online Winchester Ballistics Calculator measures trajectory.**The ballistics charts and graphs also deliver detailed information including a visual representation of point of impact, flight time, drop, drift velocity and energy.Filed Under: -
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## What is a least common multiple calculator?

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Full Answer >**A least common multiple calculator is a calculator that finds the lowest common integer divisible by two or more numbers, shows Calculator Soup.**Alcula.com, another website that offers a least common multiple calculator, rephrases this by saying it finds the smallest number that is a multiple of listed numbers.Filed Under: