Today, there are many devices that can perform calculations for us, including computers, smartphones, and calculators. Before the invention of these devices, ancient societies used the abacus to calculate.
The earliest abacus originated in China. It allowed people to add, subtract, multiply, and divide numbers by manually moving beads. Over time, humans developed various calculating methods and tools, including multiplication tables and slide rules. Although abacuses are not as common today, some still learn to use them for cognitive exercises.
Today, there are many devices that can perform calculations for us, including computers, smartphones, and calculators. Before the invention of these devices, ancient societies used the abacus to calculate.