Chinesischer Abakus
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![en:rechenhilfen [Vintage Computing Festival Berlin 2020]](https://wiki.vcfb.de/2020/_media/herb_abakus.jpg?w=300&tok=055b63 "en:rechenhilfen [Vintage Computing Festival Berlin 2020]")
en:rechenhilfen [Vintage Computing Festival Berlin 2020]
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Abakus (liczydło) – Wikipedia, wolna encyklopedia
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1850-1930 JAPANESE ANTIQUE Abacus/Soroban. | Japanese antiques, Antiques, Abacus
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Chinesischer Abakus
Abacus - Wikipedia
File:Noe abacus.jpg - Wikimedia Commons
Who invented the abacus? How does it work? Explain it briefly. - Quora
Aplikasi Abakus Digital Untuk Matematik: Soroban
Abacus - Wikipedia
Abacus
