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The abacus, also known as counting frame, is a calculating tool used especially in parts of Asia for performing arithmetic operations or processes. Today, abaci are built regularly, with a bamboo frame to which are added esferaas or with beads sliding on wires or threads resistententes, but originally they were beans or seeds like stones moved in grooves in sand or on wooden tables (abacus Logic), stone or metal. The abacus was used for many centuries before the adoption of the written modern numeral system, and is still widely used by merchants, traders and employees in Asia, Africa and elsewhere. The user of the abacus is called regular or known as: abacist. The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for the exercise of arithmetic processes. Today, abacuses are often constructed as a bamboo frame with beads sliding on wires, but originally they were beans or stones, then moved in grooves in sand or on tablets of wood, sto...