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The abacus was invented before cameras and so no photograph exists.
People realized that they could only count so high with their fingers and toes, so the abacus was invented as an early calculator.
The Chinese abacus
the inventer to the abacus is unknown but all that i know so far is that its was invented in babylonia and was made with wood when first invented
Abacus was invented by the Chinesethe abacus was also known as the first computer