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Summary
Licensing
Public domain Public domain false false
This image comes from the 13th edition of the
Encyclopædia Britannica or earlier. The
copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring
before January 1, 1929. As such, this image is in the
public domain in the United States.
English The Abacus-This was one of the earliest manual computer in the history of computer evolution.
Hebrew חשבונייה, כלי חישוב פשוט, שנמצא בשימוש מאז העת העתיקה.
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21:10, 21 August 2023
247 × 145 (26 KB) Obscure2020 Optimized with OxiPNG and ZopfliPNG.
10:53, 18 May 2005
247 × 145 (33 KB) Luestling~commonswiki {{English}} Abacus<br> {{German}} Abakus Scanned and uploaded by Malcolm Farmer (englische Wikipedia) '''Source:''' Article for "abacus", 9th edition Encyclopedia Britannica, volume 1 (1875) {{PD}}
Category:History of mathematics
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