For this reason, she is considered to be the first programmer. (G: _____) The first calculating device used by man was the ten fingers of his hands. This explains why we still count in tens and multiples of tens. Then the abacus was invented, a device whi

Then the abacus was invented, a device which uses small beads or stones to make calculations. This tool was used until the 16th century. It is still used today in some parts of the world to make ...

A mão esquerda deve segurar o Soroban, para que não deslize. O polegar é utilizado apenas para levantar as contas inferiores, como quando se empurra 1, 2, 3 ou 4 contas inferiores. Todos os demais movimentos (retirada de contas inferiores, colocação