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The Chinese Abacus Smithsonian Institution

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Early Use of the Numeral Frame

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Later Uses in the United States National Museum of American History

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Chinese abacus, or suan-pan, 19th century.

The Abacus: A Brief History

2023 Chad 1-oz Silver Fortune Series Chinese Abacus HR Antiqued Coin

The Abacus: A Brief History

Powerhouse Collection - Suanpan (Chinese abacus)

The Origins of Computers: The Abacus and The Astrolabe, by History Dev

42 Wolfsburg - 💡Did you know: The first world computer looked like this. Known as an abacus, it emerged from a need to keep track of goods being bought and sold among

11 Calculators That Show How Far Computing Has Come in the Past 2,000 Years