Forget Google Glass, first
wearable device was a Chinese
ring!
Reason:
- Developed by a famous mathematician Cheng Dawei of the Ming Dynasty, the ring features a 1.2 cm long, 0.7 cm wide abacus that sits on the finger
- Despite its small size, the rings worked as a counting tool for traders to make quick calculations.
- Researchers in Norway made the discovery after studying the language of the tiny Pacific island of Mangareva, said the report.
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