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.Learn More
Adding 1/3 cup to 1/3 cup makes 2/3 cup. Adding fractions requires that the bottom numbers, or denominators, are the same. The top numbers, or numerators, are then added together.Full Answer >
To write a scientific conclusion, summarize the results of the study or experiment. The conclusion can also list the study methods used.Full Answer >
To calculate beginning inventory, evaluate the cost of products available for sale at the start of the accounting period. Use previous accounting records to subtract the cost of goods sold and previous closing inventory from the total inventory.Full Answer >
Two early counting devices were the abacus and the Antikythera mechanism. The abacus and similar counting devices were in use across many nations and cultures. The Antikythera mechanism hails from the Greek island of Antikythera.Full Answer >