29
/es/
es
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
441621
38044
2
Crear
Public Timelines
Biblioteca
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
1 h 10 m, 1 ene 1600 año - The Abacus Ring
Descripción:
The Abacus ring was a very early version of the calculator watch, dating back to the Qing Dynasty in China.
Añadido al timeline:
14 dic 2017
0
0
362
Innovations in Wearable Tech
fecha:
1 h 10 m, 1 ene 1600 año
Ahora mismo
~ 424 years ago
Fotos: