Tag Archives: calculator

The History Of The Invention Of The Calculators?

Calculations are an easy task for some people, but for the majority of people it is not that easy. The problem of counting has appeared when numbers appeared. The Abacus is considered a primitive calculator, the first abacus was the Sumerian abacus more than 4500 years ago. Then it was followed by the Egyptian abacus … Continue reading

Scientists; Authors

Some authors and writers spoke in their novels and books about some imaginary devices that later truly happened,  some of these authors and writers are: Leonardo Da Vinci (1452 – 1519) Leonardo Da Vinci is a famous Italian painter; he was also an engineer, a geologist,a scientist, an anatomist , an architect, and a writer. … Continue reading