Wherever you are you’re probably familiar with the Zhusuan, or the abacus. This simple counting aid was doing the math long before the electronic calculator was invented. But it’s now in a battle with South Korean pickles for the title of Intangible Cultural Heritage. The result will be revealed on Monday during UNESCO’s 8th intergovernmental Council in Azerbaijan.

With a history of over 1,800 years, the abacus is considered the world’s oldest computer.

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