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jan 1, 1100 BC - Abacus

Description:

This ancient device was used for counting.

Computer. (2018). In Encyclopædia Britannica. Retrieved from https://academic-eb-com.ezproxy.umary.edu/levels/collegiate/article/computer/117728#216021.toc

Amazon. [Image]. On Amazon. Retrieved from https://www.amazon.com/Lowpricenice-Plastic-Arithmetic-Soroban-Calculating/dp/B00A0ETB2E.

Added to timeline:

Timeline of Technology

ByErin
5 Sep 2018
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416

Date:

jan 1, 1100 BC
Now
~ 3127 years ago

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