29
/ru/
ru
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
104739
9500
2
Создать
Public Timelines
Библиотека
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
31 дек 1965 г. - Also late 1965 - The ELKA 6521 designed by Bulgaria is produced; it is the first calculator with a square root function.
Добавлено на ленту времени:
4 окт 2017
0
0
496
Calculator history
Дата:
31 дек 1965 г.
Сейчас
~ 58 г назад