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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
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31 dic 1965 anni - Also late 1965 - The ELKA 6521 designed by Bulgaria is produced; it is the first calculator with a square root function.
Aggiunto al nastro di tempo:
4 ott 2017
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496
Calculator history
Data:
31 dic 1965 anni
Adesso
~ 58 years ago
