Early Civilizations - Abacus

Primitive societies used their fingers for counting but as civilizations evolved and trading became a common practice finger-counting was not enough as it was slowing down transactions. Many different objects like stones, pebbles and seashells were used but still the process was time consuming and large calculations were difficult to be done. Thus, counting devices were invented to help the merchants keep count of their goods.

One the most widely adopted counting devices was the Abacus. It was firstly created about 5000 years ago in Babylonia and it allowed to count larger quantities [1]. In order to do calculations, the person should slide beads that were mounted on rads. The Abacus became very a popular tool and it was later adopted by many civilizations that created their own versions of the device.